Lansing Grand River Assembly (LGR) is an automotive assembly plant in Lansing, Michigan, United States, owned and operated by General Motors.

It currently assembles the Cadillac CT4 and CT5 luxury sedans for the North American market.

The Lansing Grand River Assembly facility includes a body shop, paint shop, general assembly and central utilities complex.

The Lansing Grand River Assembly complex began construction in 1999 and began operations in 2001.

On September 16, 2013, Lansing Grand River Assembly Plant had produced its 1 millionth Cadillac vehicle, a 2014 Cadillac CTS sedan with Red Obsession Tintcoat body color.