Holy Trinity Church in New Plymouth, New Zealand, is registered by Heritage New Zealand as a Category I structure. Built in 1872 as an Anglican church, it was extended in 1888 by James Sanderson and again in 1903 by Francis Messenger, and renovated in 1927 (also by Messenger) and the 1960s.
The building replaced the original chapel, which had been built in the 1840s, with the foundation stone laid by Bishop George Selwyn. As such, the building was one of the first Anglican churches in Taranaki. The initial building was of board and thatch construction, and was only intended as a temporary structure. The advent of the Taranaki War and other factors, however, delayed the building of a permanent structure until 1872.
The current building was entered on the New Zealand Historic Places Trust register on 23 August 2012. It is located in Henui Street in the suburb of Fitzroy.