The Lansing Downtown Historic District is a primarily commercial and office historic district located in downtown Lansing, Michigan. The district stretches along the east side of Capitol Avenue from Ionia Street to Lenawee Street, and along both sides of Grand Avenue between Michigan and Washtenaw, with additional structures along Kalamazoo Street between Walnut and Grand and along Lenawee Street between Washington and Walnut. The district was listed on the National Register of Historic Places in 2009.