Greg Romaniuk (born August 24, 1971) is a Canadian-American curler from Snohomish, Washington. He grew up in Winnipeg, Manitoba.
At the national level, he is a 2001 United States men's champion curler.
His brother Leon is a curler too. The two brothers curled together for many years.
He started curling in 1984 when he was at the age of 13.
As of 2016, he works as a mechanical engineer with CDI Engineers.