Rose Quarter Transit Center is a light rail station in the MAX system and a TriMet bus transit center, and is located in the Rose Quarter area of Portland, Oregon, a part of the Lloyd District. It is served by the Blue, Green and Red Lines. It is currently the 7th stop eastbound on the Eastside MAX as well as the first stop after crossing the Willamette River on the Steel Bridge. Two hundred yards west of the station is the Interstate/Rose Quarter station on the MAX Yellow Line.

The Tri-County Metropolitan Transportation District of Oregon (TriMet) is a transit agency that serves most of the Oregon part of the Portland metropolitan area. Created in 1969 by the Oregon legislature, the district replaced five private bus companies that operated in the three counties: Multnomah, Washington, and Clackamas. TriMet began operating a light rail system, MAX, in 1986, which has since been expanded to five lines that now cover 59.7 miles (96.1 km). It also operates the WES Commuter Rail line since 2009. It also provides the operators and maintenance personnel for the city of Portland-owned Portland Streetcar system. In 2023, the system had a ridership of 62,055,600, or about 196,900 per weekday as of the fourth quarter of 2023.