The 2015–16 NAGICO Super50 was the 42nd edition of the Regional Super50, the domestic limited-overs cricket competition for the countries of the West Indies Cricket Board (WICB). The tournament was co-hosted by Saint Kitts and Trinidad and Tobago, with the final held at Queen's Park Oval, Port of Spain. On 15 January, umpire Jacqueline Williams stood in the match between Trinidad & Tobago and ICC Americas, becoming the first female umpire to stand in the domestic 50-over competition in the West Indies.