Greg Rikaart is from New York City. He was born in Brooklyn and raised on Staten Island. He graduated with honors from Villanova University (PA) in 1999. After interning for a congressman on capitol hill for a semester Greg relocated to Los Angeles hoping for career in acting.

Greg landed a recurring role as a gay student on "Dawson's Creek." After that, he was hired to do 10 episodes on "The Young and the Restless", but his character Kevin became so popular with viewers that he was signed to a long-term contract. Greg received an Emmy Award for the "Kevin" role in 2005 and received four consecutive Emmy nominations from 2006 to 2009.

Greg received a "Soap Opera Digest Award" nomination in 2005. He is an activist who supports liberal causes. These include women's rights and gay rights. In June 2013, he celebrated two events: his ten-year anniversary on the "Young and the Restless," and the US Supreme Court supporting same-sex relationships. He publicly acknowledged his long time relationship with actor and writer Robert Sudduth. Two years later, he married Sudduth in Hawaii. On June 12, 2016, they became parents to son Montgomery Argo Rikaart-Sudduth, born via surrogate. They all live together in Los Angeles with their pets.