Farm to Market Road 734 (FM 734) is a 19.3-mile (31.1 km) farm-to-market road in Travis and Williamson counties in the U.S. state of Texas. It is the state-maintained portion of Parmer Lane, a major arterial road in the region. Most of the route's length is located just within the northern city limits of Austin, with portions located in Cedar Park, Leander, and unincorporated areas.