The M Ocean View is a light rail line that is part of the Muni Metro system in San Francisco, California.

The portion of the line on 19th Avenue between where it joins 19th near Eucalyptus Drive and Junipero Serra Boulevard is a right-of-way separated from the street.

This section has two stations with high-platforms, one at the Stonestown Galleria on Winston Drive and the other at San Francisco State University on Holloway Avenue.

[2] It was extended through the Twin Peaks Tunnel to the downtown Ferry Building on October 31, 1927, but reverted to a shuttle service on February 27, 1928.

[6] The full line was partially converted to modern light-rail operation with the opening of the Muni Metro system on December 17, 1980.

A Final Environmental Impact Statement for the new track was released in 1983; it was opened for non-revenue moves in August 1991 and began revenue service in June 1993.

[7][8] Original plans called for the two existing stations to be rebuilt with high-level platforms, and a pocket track to allow J Church trains to turn back.

[8] The second phase required full bustitution beginning on July 30, 1994; rail service was restored to Stonestown on November 19 for holiday shopping, and on the rest of the line on January 28, 1995.

Full combined J/M service was planned upon completion of the automated train control system and the Muni Metro Turnback; however, this was never implemented even after the construction projects were finished.

[14] M Light-rail service was re-replaced by the M Bus on August 25 due to issues with malfunctioning overhead wire splices and the need to quarantine control center staff after a COVID-19 case.

[18] In response, the San Francisco County Transportation Authority published studies in 2010[19] and 2014 which explored options to facilitate pedestrian access and improve travel times.

K Ingleside would branch off from the underground line and surface on Junipero Serra Boulevard just south of Saint Francis Circle.

Initial proposals released that September included transit lanes and platform lengthening on San Jose Avenue, consolidation of several closely spaced stops, and four new traffic signals.

[23] A revised proposal in May 2023 eliminated one stop consolidation and two traffic signals, but added modifications to the terminal at San Jose and Geneva.