David Walter Chomiak (February 15, 1953-) is a politician in Manitoba, Canada. He is currently a Cabinet Minister in the New Democratic Party government of Gary Doer.

Chomiak was born in Winnipeg's mostly working-class north end, and currently lives in the West Kildonan area. He worked as a lawyer before entering politics, and was a member of the Ukrainian Cultural and Educational Centre, the Canadian Shield Foundation and the Big Brother's Association of Manitoba.

Chomiak was first elected to the Manitoba legislature in the provincial election of 1990, in the north Winnipeg riding of Kildonan. He defeated Progressive Conservative candidate David Langtry by 210 votes; Progressive Party leader Sidney Green finished fourth. After the election, Chomiak joined with 19 other NDP MLAs as the official opposition to Gary Filmon's government.

Chomiak was re-elected in the 1995 election, defeating Tory Robert Praznik 5812 votes to 3324. He again increased his margin of victory in the 1999 election, defeating PC candidate Shannon Martin by 6101 votes to 2542. The NDP won this election, and Chomiak was appointed to cabinet as Minister of Health with responsibility for Sport. He was relieved of responsibility for Sport on January 17, 2001.

In 2003, Chomiak supported Bill Blaikie's campaign to lead the federal New Democratic Party.

In 2003, he was re-elected in the once-marginal riding of Kildonan with over 70% of the vote. On October 12, 2004, he was appointed as Manitoba's Minister of Energy, Science and Technology, with responsibility for the Gaming Control Act and Manitoba Hydro. Chomiak had been the longest-serving Health Minister in Canada prior to this shuffle; there are unconfirmed reports that he had requested a transfer to a less stressful portfolio.

Chomiak is pro-life, but as health minister never sought to criminalize abortions.