The 1915–16 PCHA season was the fifth season of the Pacific Coast Hockey Association league. Season play ran from December 7, 1915 until February 25, 1916. Each team would play 18 games. The Portland Rosebuds club would be PCHA champions. After the season the club would play the Stanley Cup finals series against the Montreal Canadiens, NHA champions. Montreal would win the best-of-five series 3–2 to win the Cup.