The 2015–16 season of the División de Honor de Waterpolo was the 93rd season of top-tier water polo in Spain since its inception in 1925. Twelve teams competed for this season. The season comprises regular season and championship playoff. The regular season started in October 2015 and finished on April 23, 2016. Top eight teams at standings when finishing regular season play the championship playoff. The championship playoff started on 3/4 May with the quarter finals series. Quarter finals, semifinals and Final are played to the best of 3 matches.