Rob Altemeyer is a politician in Manitoba, Canada. He is currently a member of the Manitoba legislature.

Altemeyer was born and raised in Winnipeg, Manitoba, and was educated at the University of Manitoba where he received a Bachelor of Arts degree in Anthropology and a Master's Degree in Natural Resource Management. He also played college baseball for two years in North Dakota, on an athletic scholarship.

Altemeyer has long been involved in social justice and environmental issues in the Winnipeg area. He was responsible for bringing a recycling program to the University of Manitoba, and founded the Global Change Game (an internationally-respected educational program) while still a student. Altemeyer served a two-year term on the Council of Canadians, and has taken part in a variety of activities in the fair-trade/anti-globalization movement. In 1998, he organized an anti-globalization study group known as Beyond McWorld.

Altemeyer has also been involved in the Wolseley Neighbourhood Advisory Committee, which is involved in over two dozen local capital improvement projects. Prior to the 2003 provincial election, he served as an assistant to NDP Cabinet Minister Tim Sale.

In the Manitoba general election of 2003, Altemeyer was elected to the provincial legislature as a New Democrat for the centre-Winnipeg riding of Wolseley. He received 3482 votes, against 1193 for his nearest competitor, Green Party leader Markus Buchart.