José Antonio Medeiros (born 19 March 1970) is a Brazilian politician.

He had represented Mato Grosso in the Federal Senate from 2015 to 2019 and is currently member of the Chamber of Deputies.

Medeiros is a devout member of the Presbyterian church.

[1] Medeiros voted in favor of the impeachment against then-president Dilma Rousseff.

[2] Medeiros voted in favor of the 2017 Brazilian labor reform, and would later back Rousseff's successor Michel Temer against a similar corruption investigation and impeachment motion.