Thomas Sebastián Ortega (born 6 December 2000) is an Argentine professional footballer who plays as a left-back for Argentine Primera División club Independiente Rivadavia.

[2] Ortega made his professional debut with Independiente in a 1-0 Argentine Primera División loss to Racing Club on 9 February 2020.

[3] In June 2022, Ortega joined Primera Nacional side Instituto on loan for the rest of 2023 with a purchase option.

[4] In February 2023, Independiente sent Ortega on a one-year loan to Primera Nacional club Tristan Suárez.

[5] In January 2025, Ortega joined Independiente Rivadavia, signing as a free agent.