Trinity is one of the twelve parishes of Jersey, in the Channel Islands. It is 5.8 kilometres (3.6 mi) north of St Helier. It has a population of 3,156. The parish covers 6,975 vergées 4.7 sq mi). Les Platons in the north of the parish is the highest point in Jersey.

Trinity is an agricultural, rural parish, with only 16% of the parish being built-up, and 61% dedicated to cultivation. It is home to the States Farm, Jersey Zoo, the Royal Jersey Showground, and the Pallot Heritage Steam Museum.

The parish church is dedicated to the Holy Trinity, the only island parish church not dedicated to a saint. The coat of arms of the Parish of Trinity shows the Shield of the Trinity diagram.

The best known landmark of Trinity is Jersey Zoo (formerly Durrell Wildlife Park), located at Les Augrès Manor in Trinity. It was established in 1959 by naturalist and writer Gerald Durrell. It has approximately 169,000 visitors per year.

Trinity Manor is the home of the Seigneur of Trinity. Athelstan Riley purchased Trinity Manor in 1909. Finding the manor house in a ruined condition, he undertook an elaborate restoration (or "imaginative reconstruction", which has been criticised as turning the building into a French style château). The reconstruction was carried out 1910-1913 by C. Messervy to designs by Sir Reginald Blomfield. One of the surviving feudal duties of the holder of this fief is to present the Monarch with a pair of mallards when he or she visits the Island. The current holder of the title is Pamela Bell, as Dame of Trinity.