Markwayne Mullin Net Worth

What is Markwayne Mullin's net worth?

Markwayne Mullin is an American businessman, former mixed martial arts fighter, and politician who has a net worth of $60 million. That makes him one of the 10 richest people in the United States Senate.

Markwayne Mullin has served as a U.S. senator from Oklahoma since 2023. A member of the Republican Party, Mullin first gained national prominence during a decade-long tenure in the U.S. House of Representatives, where he represented Oklahoma's 2nd congressional district from 2013 to 2023. Known for his outspoken style and close political alliance with President Donald Trump, Mullin became one of the most recognizable conservative figures in Congress during the late 2010s and early 2020s. Before entering politics, he built a successful plumbing and home-services business in Oklahoma and briefly pursued a career in mixed martial arts. In March 2026, President Donald Trump announced that Mullin would be nominated to serve as Secretary of Homeland Security, replacing Kristi Noem. If confirmed by the Senate, Mullin would oversee one of the federal government's largest and most complex agencies, responsible for border security, immigration enforcement, disaster response, and counterterrorism operations.

Wealth Details

Markwayne Mullin's wealth appears to be tied less to a single flashy business exit and more to a broad, old-fashioned accumulation of operating businesses, real estate, ranch land, investment funds, and securities. Based on his 2024 financial disclosure, the cumulative stated value of his disclosed asset lines adds up to a range of roughly $24.4 million to $83.5 million before liabilities are subtracted. That figure reflects the way congressional disclosures work: lawmakers report assets in broad value bands rather than exact dollar amounts, which means any estimate necessarily falls within a wide range.

Mullin and his wife also own Mullin Plumbing, which his Senate biography describes as the largest home-services company in the region. A substantial portion of Mullin's disclosed wealth comes from several large holdings reported in the $1 million to $5 million range, including:

• Mullin Ranch LLC, a 1,600-acre cattle ranch and event venue in Oklahoma
• Commercial real estate properties including N Shields and S Elm Pl
• A Washington, D.C. investment property
• The Growth Fund of America (AGTHX)
• iShares Core MSCI EAFE ETF (IEFA)
• iShares Core MSCI Emerging Markets ETF (IEMG)
• Vanguard Mid-Cap ETF (VO)
• T. Rowe Price Blue Chip Growth Fund (TRBCX)
• Goldman Sachs International Small Cap Insights Fund (GICIX)
• Large life insurance-related holdings, including Northwestern Mutual policies and a family insurance trust

(public domain)

Early Life and Education

Markwayne Mullin was born on July 26, 1977, in Tulsa, Oklahoma. He was raised in the small town of Westville in eastern Oklahoma, an area that is part of the Cherokee Nation. Mullin is a citizen of the Cherokee Nation and one of the few Native Americans to serve in the United States Senate.

His unusual first name, Markwayne, was chosen by his father as a combination of two family names. Mullin grew up working in his family's plumbing business and was introduced to entrepreneurship at a young age.

He attended Oklahoma State University and later Rogers State University but did not complete a college degree. Instead, he returned home to help run the family plumbing company after his father became ill.

Business Career

Before entering politics, Mullin built a successful career as an entrepreneur. He took over the family business, Mullin Plumbing, and expanded it into one of the largest service companies in eastern Oklahoma.

Under Mullin's leadership the company grew beyond plumbing services into heating, air conditioning, electrical work, and other home-service operations. The business employed dozens of workers and served customers across a large region of Oklahoma.

Mullin frequently emphasized his background as a small-business owner during his political campaigns, portraying himself as someone who understood the challenges facing entrepreneurs and working families.

In addition to running his business, Mullin briefly competed as a mixed martial arts fighter in the early 2000s, participating in several professional bouts.

U.S. House of Representatives

Mullin entered national politics in 2012 when he ran for Congress in Oklahoma's 2nd congressional district. The seat was open after longtime Democratic representative Dan Boren chose not to seek reelection.

Running as a conservative Republican, Mullin won the election and was sworn into the U.S. House of Representatives in January 2013.

During his time in the House, Mullin positioned himself as a strong supporter of limited government, lower taxes, and stricter immigration policies. He served on several committees and became known for his vocal support of conservative priorities.

Mullin was reelected to the House multiple times, ultimately serving five terms. Over the years he developed a reputation as a combative and outspoken member of Congress, frequently appearing on television and social media to defend Republican positions.

U.S. Senate

In 2022 Mullin ran for the U.S. Senate seat previously held by longtime Oklahoma Republican Senator Jim Inhofe, who retired. Mullin won the Republican primary and then defeated Democratic opponent Kendra Horn in the general election.

He took office in January 2023 as Oklahoma's junior senator.

In the Senate Mullin continued to align closely with former President Donald Trump and the broader conservative wing of the Republican Party. He became known for his aggressive defense of Trump during congressional debates and investigations.

Mullin also drew national attention for his combative exchanges with labor leaders and political opponents, including a widely publicized confrontation with a labor union leader during a Senate hearing in 2023.

Nomination for Secretary of Homeland Security

In March 2026 President Donald Trump announced that he would nominate Mullin to serve as Secretary of Homeland Security following the dismissal of Kristi Noem.

Trump described Mullin as "highly respected" and praised his loyalty and alignment with the administration's immigration and national security agenda. Mullin said he was "super excited" about the opportunity and quickly began preparing for the Senate confirmation process.

If confirmed, Mullin would take charge of the Department of Homeland Security, a massive federal agency created after the September 11 attacks that oversees border protection, immigration enforcement, the Federal Emergency Management Agency (FEMA), the Secret Service, and numerous other security and disaster-response functions.

Because Mullin's Senate term was scheduled to expire in 2026, Oklahoma law would allow the state's governor to appoint a temporary replacement until the next election.

Personal Life

Markwayne Mullin is married to Christie Mullin, and the couple has six children. The family lives in Oklahoma and remains closely connected to the plumbing business that Mullin helped grow before entering politics.

Outside of politics, Mullin has maintained interests in athletics and physical fitness, reflecting his earlier involvement in mixed martial arts competition.

His background as a business owner, Native American tribal citizen, and former athlete has contributed to a public image that blends populist political messaging with a personal narrative of entrepreneurship and self-made success.

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