Holy Trinity Church is an evangelical and conservative Anglican church on North Terrace, in the city of Adelaide, South Australia. It was the first church built in Adelaide shortly after British settlement. It is the largest Anglican church in South Australia with over 1,200 people attending each Sunday. Its Sunday services include an 8:30 am tradition service, 10:00 am and 10:30 am family services and 5:00 pm and 7:00 pm contemporary services.