Robert Khuon Wiederstein (born April 3, 1968) is an American politician. He represented District 11 as a Democrat in the Kentucky House of Representatives from 2019 to 2021.
Wiederstein was born in Louisville, Kentucky. He earned a BA in economics from Hanover College in 1990 and a JD from Indiana University in 1993.
Wiederstein was a judge for the 51st District Court in Kentucky from 1999 to 2016.
Wiederstein was elected to represent District 11 in the Kentucky House of Representatives in 2018 following the retirement of Robby Mills to run for the Kentucky Senate. He lost reelection in 2020 to Republican Jonathan Dixon.