Thomas DeFreitas was born in Boston, was educated at the Boston Latin School, and attended the University of Massachusetts (in Boston and in Amherst) for two years. His poems have appeared in Autumn Sky Poetry Daily, Dappled Things, Ibbetson Street, Pensive, Plainsongs, and elsewhere.

In 2018, Thomas’s poem “Chasing the Waves” was chosen by Arlington, Massachusetts Poet Laureate Cathie Desjardins to be part of the Talking Chair Project, an interactive poetry exhibit installed during National Poetry Month at the Robbins Library in Arlington. In the summer of 2019, “Detox” was chosen as an Award Poem by the editors of Plainsongs. In November 2024, "Grief" was nominated for a Pushcart Prize by the editor of Autumn Sky Poetry Daily.

Thomas's fourth collection of poems, Walking Between the Raindrops, was published in February 2025 by Kelsay Books.