太平洋屋脊步道（英语：Pacific Crest Trail，简称：PCT，又名：太平洋屋脊径），是一条贯穿美国西部荒野、大致沿着内华达山脉及喀斯喀特山脉行走、全长4,286公里（2,663英里）的远足径，南端由加利福尼亚州接壤墨西哥的边界开始，途经俄勒冈州，一直连接到北方华盛顿州近加拿大的边境地区。此路线途经25个国家森林及7个国家公园，于1968年被定名为国家风景区步道，其官方地位获国家步道系统法案认可。它是远足三冠王最西方的路线，亦是大西部环状步道的一部分。

The Pacific Crest Trail (commonly abbreviated as the PCT, and officially designated as the Pacific Crest National Scenic Trail) is a long-distance hiking and equestrian trail closely aligned with the highest portion of the Sierra Nevada and Cascade mountain ranges, which lie 100 to 150 miles (160 to 240 km) east of the U.S. Pacific coast. The trail's southern terminus is on the U.S. border with Mexico, just south of Campo, California, and its northern terminus on the U.S.–Canada border on the edge of Manning Park in British Columbia; its corridor through the U.S. is in the states of California, Oregon, and Washington.