Sydney-Membertou is a provincial electoral district in Nova Scotia, Canada, that elects one member of the Nova Scotia House of Assembly.

Following the 2019 redistribution, the riding lost Whitney Pier to Cape Breton Centre-Whitney Pier, while gaining some territory from Sydney River-Mira-Louisbourg, and was re-named Sydney-Membertou.

The district contains the communities of Sydney, Grand Lake Road, Mira Road, Sydney River, Prime Brook and the Membertou 28B Indian Reserve.

The riding is represented by Derek Mombourquette of the Nova Scotia Liberal Party.

He won the seat in a byelection on July 14, 2015,[1] following the resignation of MLA Gordie Gosse.