State Route 225 (SR-225) is a state highway in the U.S. state of Utah that spans 1.274 miles (2.050 km) in Farmington, Davis County. The route connects I-15 to US-89 and SR-106 as it passes through the center of Farmington on Park Lane. The highway was formed in 1964, initially having its west end at US-89 and I-15 before the terminus moved further west to Clark Lane in 2005. The eastern terminus has always remained at SR-106.

The route begins at the intersection of Clark Lane in a semi-developed portion of Farmington and heads north on Park Lane as a four-lane road. About 400 feet (120 m) north of the junction, the route turns northeast to intersect at I-15, where there is an off-ramp from southbound I-15 on exit 325 and an on-ramp from SR-225 onto northbound I-15. Immediately after, SR-225 comes to another interchange, this time with the US-89 freeway, which includes access to southbound I-15. Past this intersection, the route heads due west before intersecting an access road to Lagoon Amusement Park and terminating at SR-106.

State Route 225 was established in 1964, initially going from US-89 east on Burke Lane (which today is Park Lane) to SR-106. In 1967, the western terminus was moved to I-15 when it was constructed through the area. In 2005, the route was extended southwest to Clark Lane.

The entire route is in Farmington, Davis County.