His friend, composer Bear McReary broke the news on Twitter today.
Hatch had been in hospice care after a long battle with pancreatic cancer. He was 71 years old.
Hatch began his long career in theater before catching his first television break on All My Children in 1971.
His theater credits include runs in the Los Angeles Resperatory Theater as well as in Chicago and off-Broadway roles.
He got his first big break with a role on The Streets of San Francisco in its final season as Inspector Dan Robbins.
It was on Battlestar Galactica in 1978 where Richard Hatch became a household name.
As Captain Apollo, Hatch starred alongside Dirk Benedict and Lorne Greene for one season.
Yes, the original series of Battlestar Galactica was on the air for only one season,