The 2012–13 Longwood Lancers men's basketball team represented Longwood University during the 2012–13 NCAA Division I men's basketball season. The Lancers, led by tenth year head coach Mike Gillian, played their home games at Willett Hall and were members of the North Division of the Big South Conference. This was the Lancers first season in the Big South. They finished the season 8–25, 4–12 in Big South play to finish in last place in the North Division. They lost in the quarterfinals of the Big South tournament to VMI; the tournament constituted Longwood's first postseason appearance as a Division I school.