Gregorio Eduardo Casar is an American politician who is the member for Texas's 35th congressional district in the United States Congress since 2023. He served as a member of the Austin City Council from the 4th district from 2015 to 2022. Casar is a member of the Democratic Party and was endorsed by the Working Families Party in his run for Congress. He was first elected to the Austin City Council in 2014, representing District 4. He was reelected in 2016 and 2020. He was elected to Congress in 2022.