State Trunk Highway 154 (often called Highway 154, STH-154 or WIS 154) is a state highway in the U.S. state of Wisconsin. It runs in east–west in south-central Wisconsin from near Loyd to Rock Springs.
The highway begins at its intersection with WIS 58 north of the community of Neptune and follows a northeasterly path from it. After a short concurrency with County Trunk Highway G (CTH-G), it passes through Hill Point and continues east until it reaches Loganville. In Loganville, the highway becomes concurrent with WIS 23 and heads northwards. After , the concurrency ends and the highway heads eastwards, passing through Wiedman Memorial Park and intersections with CTH-CH and CTH-D before terminating in Rock Springs at its intersection with WIS 136 and CTH-DD.