Jay Laga'aia, who was born in New Zealand and is of Samoan descent, attacked the Channel Seven soapie on Twitter.
"As someone who lost his job on H&A because they couldn't write two ethnics that weren't together, I'd like the chance to ply my trade," he tweeted. Laga'aia joined Home and Away in November 2009 playing Reverend Elijah Johnson.
He worked on the show for several months before leaving to work on a separate project and agreeing to return in November 2010.
He was dropped from the soapie at the end of last year, but his character will continue to appear on the show until April.
It is believed the other ethnic character his tweet refers to is long-running Home and Away star Ada Nicodemou, who is Greek-Cypriot. Laga'aia's character shared a romance with Nicodemou's character during Laga'aia's first stint on Home and Away.
His attack comes after Underbelly actor Firass Dirani accused commercial TV networks of having a "white Australia" policy and called for them to write shows for "different cultural backgrounds".
Laga'aia backed his calls, saying: "Hats off to you Firass Dirani, for a call to stop commercial network producers casting only white actors. Only on Australian screens. Shame!"
But Channel Seven has denied Laga'aia's accusations, saying his contract ended because his character's storyline had "reached its natural conclusion".