Larry Dean Arp Jr. (born July 7, 1966) is a Republican member of the North Carolina House of Representatives. He has represented the 69th district (including constituents in Northwestern Union County) since 2013.

Arp earned a degree in civil engineering from The Citadel and a master of science in civil engineering from the University of North Carolina at Charlotte. He is a licensed professional engineer and structural engineer and the president of Arp Engineering in Monroe, North Carolina. He represents Union County, North Carolina, in the General Assembly.

In February 2025, Dean Arp saved the life of a North Carolina resident in Richmond County from a house fire. Representative Arp noticed a burning mobile home along U.S. Route 1. Arp went into the burning home and found an elderly woman stuck in a wheelchair unable to escape. Arp pulled the woman to safety; she was later identified as a 77-year-old cancer and stroke survivor named Esther. Arp contributed to a fundraiser for the continued financial and medical support of Esther following the fire and spoke of the unique bond they now share. His actions were honored by the United States House of Representatives by Congressmen Mark Harris and Tim Moore.