Trinity High School is a public high school in Euless, Texas. The school serves grade levels 10–12 and is a part of the Hurst-Euless-Bedford Independent School District.

Euless is a city in Tarrant County, Texas, United States, and a suburb of Dallas and Fort Worth. Euless is part of the Mid-Cities region between Dallas and Fort Worth. In 2020 Census, the population of Euless was 61,032. The population of the city increased by 19.02% in 10 years. The city's population was 51,277 as of the 2010 census.