State Route 205 (SR 205) is a primary state highway in the U.S. state of Virginia. The state highway runs 18.47 miles (29.72 km) from SR 3 at east to SR 3 at Oak Grove. SR 205 connects several small communities in eastern King George County and northwestern Westmoreland County. The state highway also passes through the Potomac River resort of Colonial Beach, where the highway has a spur, State Route 205Y (SR 205Y).