Diana Jennifer Arévalo (born October 27, 1981) is an American politician. She was the former Democratic member of the Texas House of Representatives for the 116th district.
Arévalo ran unopposed in the November 2016 general election after defeating two opponents in the Democratic primary. She served on the Rules and Resolutions, Defense and Veteran's Affairs, and Public Health committees.
In 2018, Arévalo ran for re-election. She was defeated in the Democratic primary by her predecessor, Trey Martinez Fischer, winning 49.4% of the vote compared to Martinez Fischer's 50.6%. She left office on January 8, 2019 and was succeeded by Trey Martinez Fischer.