Mark C. Walczyk (/ˈwɑːlsɪk/; born July 3, 1985) is an American politician and US Army Reserve Engineer Officer from the state of New York.

In 2007, while attending SUNY Albany Walczyk began his political career by interning in the NYS Senate through Student Programs.

[3][4][5][6] Walczyk announced in May 2018 that he would challenge incumbent Democratic Assemblywoman Addie Jenne, who had represented the Assembly's 116th district for ten years.

On energy policy, he has called on Governor Kathy Hochul to pause the installation of new solar farms in the state due to disasters in his district.

[16] He has also questioned progressive policies such as the "Build Public Renewables Act", arguing that it amounts to a state takeover of the energy sector and will harm all New Yorkers.

In 2021, Hochul signed a piece of legislation sponsored by Walczyk that added two wineries in Jefferson County to the Thousand Islands-Seaway Wine Trail.

[21] Walczyk announced his deployment to Kuwait for nine months starting late January 2024, missing the bulk of the year's legislative session[22] His office stated that he would not be resigning and that staff will continue handling constituent services in his absence.

Second Lieutenant Walczyk was assigned the role of Executive Officer of the 479th Engineer Battalions’ Forward Support Company.

Walczyk announced that he would be deployed to Kuwait for nine months starting January 2024, thus missing the bulk of the year's legislative session.

He is a member of the Watertown Noontime Rotary Club, Lowville Elks Lodge, Jefferson County Animal Cruelty Task Force, American Legion Post 61, Italian American Civic Association, Friends of the MAC Nature Center, and Friends of Thompson Park.