Mark Elderkin (born September 27, 1963) is an American entrepreneur who co-founded Gay.com in 1994 with his husband Jeff O. Bennett.[1] Elderkin served as President of PlanetOut Inc. when the company went public in 2004. He retired from the company in 2006. He founded Gay Ad Network in 2007, which was named as one of the Inc. 5000 fastest growing private companies in America. In 2024, he launched Elderkin Wealth Management, a Registered Investment Advisor (RIA) firm.
Elderkin was a child prodigy of the clarinet. He graduated from UC Berkeley Haas School of Business with an MBA and Boston University with a BS in Systems Engineering. He has served on the Board of GLAAD and mentors young entrepreneurs.
Elderkin lives in Ft. Lauderdale, Florida and West Hollywood, California with his husband Jeff Bennett. His daughter Chloe Bennett Elderkin is a student at University of Southern California Leonard Davis School of Gerontology.