The 183A Toll Road or 183A is a controlled-access toll road in the Austin metropolitan area of the U.S. state of Texas. The road includes sections in north Austin, Cedar Park, and Leander. It provides a bypass for U.S. Route 183. The road is owned and operated by the Central Texas Regional Mobility Authority. The 183A Toll road is electronic only and has no cash toll booths. Motorists driving without a toll tag will receive a bill in the mail payable within 30 days. The tolled portion of the highway runs from US 183 near SH-45 to FM 2243 in Leander.

Cedar Park is a city and a suburb of Austin in the state of Texas, approximately 16 miles (26 km) northwest of the center of Austin. According to the 2020 U.S. census, the city's population was 77,595, and in 2022 was estimated to be 77,642.