James Lassche (born 31 August 1989) is a New Zealand rower.At the 2010 World Rowing Championships, he won a silver medal in the lightweight men's pair partnering with Graham Oberlin-Brown.
At the 2013 World Rowing Championships held at Tangeum Lake, Chungju in South Korea, he won a silver medal in the lightweight men's four with James Hunter, Curtis Rapley, and Peter Taylor.