Andy Anstett (June 25, 1946-) was a Manitoba politician. He served in the NDP government of Premier Howard Pawley, and made an unsuccessful bid for the party's leadership in 1988.

Anstett was born in Groenigen in the Netherlands, and moved to Kitchener, Ontario, Canada as a child. He received a political science degree from the University of Waterloo, and subsequently moved to Manitoba. From 1973 to 1979 he served as Deputy Chief Electoral Officer in the province.

Anstett was elected to the provincial legislature in 1981, representing the New Democratic Party in the rural riding of Springfield. He was appointed Minister of Municipal Affairs on November 4, 1983 and also served as the party's House Leader. When Howard Pawley attempted to reintroduce bilingualism in the 1980s, Anstett was a leading supporter of the measure and an opponent of renegade NDP backbencher Russell Doern. Anstett was defeated by Tory Gilles Roch in the election of 1986.

When the Pawley government lost a parliamentary vote of confidence in 1988, Anstett ran to succeed Pawley as leader. He placed third on the first ballot with 317 votes (out of 1663 valid votes cast), and was eliminated on the second ballot despite the support of fourth-place candidate Maureen Hemphill (see New Democratic Party of Manitoba leadership conventions.) Anstett again ran in Springfield in the election which followed, and placed third.

After his career in provincial politics ended, Anstett became chair of the Manitoba Municipal Board , and later served as chair of the Ontario Assessment Review Board until 1998. He now works for the International Property Tax Institute , and was a tax advisor to the government of Kyrgyzstan in 2002.