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Apr. 10 - Apr. 12

Lone Star Volleyball II (O)

The Lone Star Classic Girls National Qualifier—a major USA Volleyball national‑qualifying tournament series that brings multiple age divisions to the Oklahoma City Convention Center across three weekends in April 2026. Events include 15s–16s, 13s, and 14s divisions, depending on the weekend. More Information

Apr. 17 - Apr. 19

Lone Star Volleyball III (O)

Apr. 22

CBMC Metro Prayer Breakfast (R)

The CBMC Metro Prayer Breakfast is an annual, large‑scale Christian leadership gathering in Oklahoma City where business leaders, professionals, and community members unite for prayer, faith‑centered encouragement, and inspirational keynote messages. More Information

Apr. 24 - Apr. 25

OKC Marathon Packet Pickup/Wellness Expo (O)

The Oklahoma City Marathon Packet Pickup is the process by which runners collect their official race materials—bib, timing chip, shirt, and event information—at the OKC Memorial Marathon Health & Fitness Expo, located inside the Oklahoma City Convention Center. More Information

Apr. 28

Oklahoma Real Estate Commission Conference

This is the state’s flagship real estate conference, bringing together agents, brokers, and industry leaders for education, networking, and professional development. More Information

Apr. 30

Apartment Association of Central Oklahoma Trade Show

The Apartment Association of Central Oklahoma (AACO) Trade Show is a major annual event in Oklahoma City designed for professionals in the multifamily housing industry. It brings together property management teams, maintenance staff, and supplier partners for networking, education, and product discovery. More Information

May. 02

Artini

ARTini is Oklahoma City’s largest martini-tasting event, featuring an art auction and live entertainment. It’s hosted each spring and benefits local arts organizations supported by Allied Arts. More Information

May. 02

Mid-American Christian Commencement

Mid-America Christian University (MACU) holds an annual commencement ceremony to celebrate students who have completed their degree program. More Information

May. 06 - May. 10

USA Gymnastics Men's and Women's Nationals (O)

The 2026 Men’s and Women’s Development Program National Championships are major USA Gymnastics events that bring together top Level 10 and Junior Elite athletes from across the country. More Information

May. 12 - May. 14

International School of Hydrocarbon Measurement

The International School of Hydrocarbon Measurement (ISHM) is a long‑running educational event dedicated to teaching professionals how to accurately measure, monitor, and manage hydrocarbons—both natural gas and liquid petroleum products. It’s essentially the premier training hub for anyone working in oil and gas measurement More Information

May. 15 - May. 17

Southern Plains Wrestling (O)

The Southern Plains Regional Championships is a major USA Wrestling event that brings nearly 1,500 youth, 16U, and Junior athletes from across Oklahoma, Texas, Kansas, and surrounding states to compete in both freestyle and Greco‑Roman disciplines. More Information

May. 18 - May. 19

Oklahoma Grocers Association (R)

The Oklahoma Grocers Association (OGA) is a statewide trade organization that represents Oklahoma’s grocery and convenience store industry. It brings together independent grocers, supermarket chains, convenience stores, wholesalers, and suppliers to strengthen and advocate for the food retail sector across the state. More Information

May. 18

Gases and Welding Distributors Convention (R)

The GAWDA mission is to promote the safe operation and economic vitality of distributors of industrial gases and related welding equipment and supplies. More Information

May. 22 - May. 24

GalaxyCon (O)

GalaxyCon is a large, multi‑genre fan convention company in the United States that hosts pop‑culture festivals across several major cities. It brings together celebrities, voice actors, comic artists, writers, cosplayers, and fans for multi‑day events celebrating comics, anime, sci‑fi, fantasy, gaming, and more. More Information

May. 27 - May. 29

CCOSA/OSSBA Convention (R)

CCOSA and OSSBA are two major education‑leadership organizations in Oklahoma. They work closely with school districts, administrators, and school boards. More Information

May. 30

Big Brothers Big Sisters of Oklahoma GALA

The Big Brothers Big Sisters Gala in Oklahoma is a series of annual fundraising events held across the state to support Big Brothers Big Sisters of Oklahoma (BBBSOK). These galas are designed to raise money and awareness for the organization’s mission: creating and supporting one‑to‑one mentoring relationships that help Oklahoma youth build confidence, resilience, and brighter futures. More Information

May. 30

ThriftCon (O)

ThriftCon is a national vintage clothing and collectibles convention—essentially a massive curated marketplace and cultural event dedicated to secondhand fashion, retro styles, and nostalgic goods. It has grown into one of the most recognizable vintage events in the U.S., drawing both hardcore collectors and casual thrifters. More Information

May. 30 - May. 31

Retail Liquor Association Trade Show (R)

A statewide industry group that represents individually owned retail package liquor stores in Oklahoma. Its purpose is to give these small businesses a unified voice in state and federal policy discussions. More Information

Jun. 05 - Jun. 07

Greatest American Sports Card Show

G.A.S. Card Shows (Greatest American Sportscard Shows) is one of the fastest‑growing multi‑city trading card expo brands in the Midwest, known for large vendor halls, autograph guests, and a collector‑friendly atmosphere. Events run year‑round across Kansas, Missouri, Iowa, Wisconsin, and Oklahoma, including a major stop in Oklahoma City. More Information

Jun. 10 - Jun. 13

INACSL Conference

The INACSL Annual Conference is a leading forum for simulationists, researchers, and solution providers, providing an ideal environment to gain and disseminate current, state-of-the-art knowledge in skills, simulation operations, and applications in an evidence-based venue. More Information

Jun. 19 - Jun. 21

Villain Arts

Villain Arts is one of the largest and most recognized tattoo‑convention organizers in the United States, known for hosting high‑energy, multi‑day tattoo festivals featuring world‑class artists, live entertainment, and hundreds of vendors. Their events—including the annual Oklahoma City Tattoo Arts Festival at the OKC Convention Center—draw thousands of attendees and showcase top tattoo talent from across the country. More Information

Jun. 30 - Jul. 03

International Moose Convention

The International Moose Convention is the annual global gathering of Moose International, bringing together members, delegates, and leaders for a week of organizational business, training, ceremonies, and fraternal celebration. The 2026 convention will be held in Oklahoma City, making it a major event for the region. More Information

Jul. 10 - Jul. 14

United National Indian Tribal Youth Conference

UNITY’s Mission is to foster the spiritual, mental, physical, and social development of American Indian, Native Hawaiian, and Alaska Native youth, and to help build a strong, unified, and self-reliant Native America through greater youth involvement. More Information

Jul. 15

State of the City Address (R)

The Oklahoma City State of the City address is the Mayor’s annual keynote speech—hosted by the Greater Oklahoma City Chamber—where the Mayor outlines the city’s progress, major accomplishments, economic outlook, policy priorities, and upcoming initiatives. More Information

Jul. 17 - Jul. 18

Faith Riders Corvette Club (O)

The Faith Riders Corvette Club is a charitable, community‑focused Corvette group based in Oklahoma City that uses car culture as a platform for service, scholarships, and faith‑centered fellowship. More Information

Jul. 20 - Jul. 22

Oklahoma Indian Gaming Association Conference

The 2026 OIGA Conference and Trade Show, otherwise known as ‘the biggest little show in Indian Gaming,’ will draw nearly 3,000 vendors, visitors and guest speakers to celebrate and advance our industry. If you have never attended the OIGA Trade Show, you are in for a treat! It is a lively, fun, informative, high-energy assembly of some of the biggest names in the gaming and hospitality industries. More Information

Jul. 24 - Jul. 25

Focus Foundations Conference

For more than 15 years, FOCUS OKC has been, and continues to be, one of the largest and most principled chiropractic conferences in the world. Hundreds of chiropractors, chiropractic students, office teams, and families attend FOCUS OKC every year to connect, share, and get inspired. More Information

Jul. 27 - Jul. 30

TEASE Conference (R)

Join us for the Annual Special Education Conference that will focus on the Science of Reading and Writing for Students with Disabilities. The participants will choose from breakout sessions designed for special education directors/administrators, special education teachers (elementary, secondary, and those who teach alternate standards), and related service providers. More Information

Jul. 31 - Aug. 01

National Governors Association Summer Meeting (R)

We are the industry-leading government relations consulting firm. Based in DC, but our expertise encompasses all 50 states and the District of Columbia. Client partners include corporations, trade associations, advocacy coalitions, the federal government, and non-profits. More Information

Aug. 01 - Aug. 02

Red Earth Festival (O)

Experience one of the country’s premier Native art markets, featuring more than 130 Indigenous artists selling original works in painting, jewelry, sculpture, beadwork, textiles, and more. Shop award-winning pieces, meet artists in person, and take home something truly special.

Throughout the day, enjoy live dance showcases and special competitions that bring movement, color, and tradition to the heart of downtown OKC. All events take place inside the Art Market hall.

More Information

Aug. 03 - Aug. 04

Select Oklahoma Conference on Economic Development (R)

Select Oklahoma, an Economic Development Partnership, Inc., was formed in February 2021. The new organization merges the Oklahoma Professional Economic Development Council (OEDC) and the Governor's Economic Development Marketing Team (GEDMT). Job one of Select Oklahoma is supporting statewide efforts to recruit new and retain existing primary jobs and capital investment in the state. In addition to marketing efforts, the corporation will support a healthy economy for the State of Oklahoma through legislative advocacy, education, training and development and professional collaboration. More Information

Aug. 13 - Aug. 16

OSSBA/COOSA Leadership Conference (R)

National and state education leaders deliver sessions on leadership, policy, student outcomes, and innovation. More Information

Aug. 19 - Aug. 20

Oklahoma Restaurant Association Expo (R)

The Oklahoma Restaurant Association Expo is a private‑industry trade show designed for professionals in the restaurant, bar, hotel, and broader hospitality sectors. It’s widely regarded as the best annual opportunity for Oklahoma’s hospitality community to connect with suppliers, discover new products, and stay ahead of industry trends. More Information

Aug. 24 - Aug. 27

Nation's Best Sports Fall Semi-Annual Market (R)

NBS offers independent retailers a diverse portfolio of buying opportunities in all categories of outdoor sports and general sporting goods. Our Markets offer our Members exclusive access to hundreds of Vendors, competitive Buying Programs, and the latest, most innovative products in the industry—all with significant discounts. More Information

Sep. 05

Time Travelers Vintage Expo (O)

The Time Travelers Vintage Expo is a large, traveling vintage market—one of the most diverse and wide‑reaching in the United States. It tours 17+ cities nationwide, including regular stops at the Oklahoma City Convention Center. More Information

Sep. 09 - Sep. 11

Association of Oklahoma Nurse Practitioners

AONP's mission is to advance, support, and promote the high standards of health care delivered by nurse practitioners and to improve patient access to quality healthcare. More Information

Sep. 12 - Sep. 13

American Grappling Association (O)

The American Grappling Association (AGA) is a Midwest‑based grappling organization that hosts premier Gi and No‑Gi tournaments for athletes of all ages, emphasizing safety, transparency, and extensive match experience. More Information

Sep. 12 - Sep. 13

OK Collects Card Show

OK Collects is built for collectors who love the hobby and enjoy the experience that comes with it. Backed by the team behind TX Card Shows—one of the largest and most trusted card show series in the country—we’re bringing that same energy, scale, and community focus to Oklahoma. More Information

Sep. 16 - Sep. 19

AWT Annual Convention and Exposition (R)

The Association of Water Technologies (AWT) Annual Convention & Exposition continues to grow and evolve each year. With interactive sessions that provide you with additional industry knowledge and network opportunities. The Annual Convention is an extremely valuable educational opportunity for all water treatment professionals. More Information

Sep. 26

Gumdrops and Lollipops Ball

The Anna’s House Gumdrops & Lollipops Ball is a large, candy‑themed fundraising gala held at the Oklahoma City Convention Center to support the Anna’s House Foundation. This faith‑based foster‑care organization provides housing, resources, counseling, and community support for Oklahoma foster families. More Information

Sep. 27 - Sep. 30

National Tank Truck Week (R)

National Tank Truck Week is the tank‑truck industry’s premier annual event focused on fleet operations, safety, maintenance, regulatory compliance, and hands‑on technical training, bringing together the professionals who keep tank trucks on the road. More Information

Sep. 30 - Oct. 01

Oklahoma Hospital Association Conference (R)

OHA’s primary objective is to promote the health and welfare of all Oklahomans by leading and assisting its member organizations in providing high quality, safe and valued health care services to their communities. The OHA also believes hospitals play a vital role in helping to advance the overall state of health for their patients and the public at large. More Information

Oct. 04 - Oct. 07

NACADA Annual Conference

NACADA promotes and supports quality academic advising in institutions of higher education to enhance students' educational development. NACADA provides a forum for discussion, debate, and the exchange of ideas about academic advising through numerous activities and publications. More Information

Oct. 08 - Oct. 14

American Society of Plumbing Engineers

The ASPE Convention & Expo attracts thousands of plumbing engineers, designers, specifiers, and contractors with the largest plumbing products and systems tradeshow in the country, combined with unparalleled professional development seminars and networking opportunities. More Information

Oct. 16 - Oct. 17

OKC Whiskey Riot (R)

Whiskey Riot is a large‑format, high‑energy whiskey tasting festival that brings together hundreds of bourbons, ryes, scotches, Irish whiskeys, and world whiskeys for side‑by‑side sampling, education, and direct interaction with distillers and brand founders. More Information

Oct. 18 - Oct. 22

AAZV Annual Conference (R)

The AAZV Annual Conference is the premier yearly gathering of zoo and wildlife veterinarians, bringing together hundreds of professionals from around the world for scientific sessions, hands‑on workshops, research presentations, and industry collaboration. More Information

Oct. 21 - Oct. 22

Focus on Home (R)

Focus on Home is an Oklahoma City–based nonprofit that combats furniture poverty by providing families in need with fully furnished, dignified, and functional homes using donated furniture, volunteer support, and personalized design assistance. More Information

Oct. 23 - Oct. 25

Inks, Streets and Beats Expo (O)

The Inks, Streets & Beats Expo is a high‑energy tattoo, car‑culture, and live‑music festival held at the Oklahoma City Convention Center, blending live tattooing, hot‑rod showcases, pin‑up competitions, and all‑day concerts into one immersive, art‑driven weekend. More Information

Oct. 25

Dance Effect Competition

The Dance Effect Oklahoma City competition is a regional dance event offering a fair, family‑friendly environment with multiple competition levels, special awards, and dancer‑focused activities. More Information

Oct. 26

Innotech

InnoTech is a one‑day business and technology conference and expo—Oklahoma’s largest of its kind—designed for IT leaders, developers, cybersecurity professionals, and business executives to learn, network, and explore emerging tech solutions. More Information

Oct. 31 - Nov. 04

USA Softball Annual Council Meeting (R)

The USA Softball Annual Council Meeting is the national governing body’s yearly gathering where nearly 300 council members from across the country meet to vote on rule changes, award National Championships, conduct organizational business, and celebrate Hall of Fame inductees. More Information

(R) Registration Required | (O) Open to Public