Steve Pinsonneault

Steve Pinsonneault MPP is a Canadian politician who was elected to the Legislative Assembly of Ontario in a by-election on May 2, 2024. He represents the electoral district of Lambton—Kent—Middlesex as a member of the Ontario Progressive Conservative Party.

Prior to his election to the legislature, he was a municipal councillor in Chatham-Kent.

Pinsonneault was reelected in the 2025 general election. In May 2025, he stated his opposition to his own party's omnibus bill to cancel an environmental assessment of a proposed 30-fold expansion of a landfill in Dresden, Ontario in his riding. During his byelection win in 2024, he had campaigned on securing such an assessment.