Muni Metro is a light rail system serving San Francisco, California, United States. Operated by the San Francisco Municipal Railway (Muni), a part of the San Francisco Municipal Transportation Agency (SFMTA), Muni Metro served an average of 113,600 passengers per day in the first quarter of 2026, making it the fifth-busiest light rail system in the United States. Six services – J Church, K Ingleside, L Taraval, M Ocean View, N Judah, and T Third Street run on separate surface alignments and merge into a single downtown tunnel. The supplementary S Shuttle service operates within the tunnel. Muni Metro operates a fleet of 249 Siemens S200 LRVs.

The San Francisco Municipal Railway was created in 1909 and opened its first streetcar lines in 1912. Five of the current lines were added in the following decades: the J in 1917, the K (including the Twin Peaks Tunnel) in 1918, the L in 1919, the M in 1925, and the N in 1928. The other Municipal Railway streetcar lines, and those of the privately owned Market Street Railway, were converted to buses in the 1920s to 1950s, but these five lines were retained as streetcars because of their private rights of way. The system was converted to light rail, with larger US Standard Light Rail Vehicles, in the late 1970s and early 1980s. This included the opening of the Market Street subway as well as extension of three lines to Balboa Park station. An extension along The Embarcadero to the Caltrain terminal at 4th and King Street opened in 1998. The T Third Street line opened in 2007, serving the southeastern portion of the city. The Central Subway, with three new subway stations and one new surface station, opened on November 19, 2022.

The system has 115 stations, of which 67 (58%) are accessible. All twelve subway stations plus 25 surface stations have high-level platforms, high, that allow for accessible level boarding at all doors. The other 78 stations have a mixture of low-level platforms on dedicated right-of-way, low-level boarding islands (platforms between the tracks and traffic lanes), sidewalk bulbs, and no platforms (where passengers cross parking or traffic lanes to board). Of those 78, 30 have "mini-high" platforms providing accessible boarding at a single door, while one has a wheelchair lift.

Current stations / Transfer stations with BART / Caltrain / Transfer stations with BART / Caltrain, and Line termini Line termini

Station Image Line(s) Service began Platforms Accessible Notes High-level island platform (subway station) Yes High-level island platform (subway station) Yes High-level island platform (subway station) Yes Transfer to Union Square/Market Street station High-level island platform (subway station) Yes High-level island platform (subway station) Yes Transfer to Van Ness Bus Rapid Transit High-level side platforms (subway station) Yes J Church stops on the surface at boarding islands with mini-high platforms at . The K, L, and M also used these boarding islands from 1972 to 1982. High-level side platforms (subway station) Yes High-level side platforms (subway station) Yes High-level platforms added in 1985 High-level side platforms (subway station) Yes Originally a surface station outside the portal; converted to high-level platforms in 1980 (J) (N) Boarding islands with mini-high platforms Yes Also served by the K, L, and M from 1972 to 1982 Boarding islands No Also served by the K, L, and M from 1972 to 1982 Low-level side platform (inbound) and boarding island (outbound) with mini-high platforms Yes Partially inside Dolores Park Low-level side platforms No Inside Dolores Park None No Low-level side platforms No None No Boarding islands with mini-high platforms Yes None No None No Church and 29th Street (inbound)Church and Day (outbound) Boarding islands with mini-high platforms Yes None No Terminus of the line until 1991 None No Low-level side platforms with mini-high platforms Yes Low-level side platforms No Connection to BART at Glen Park station Boarding islands No Boarding islands No Boarding islands No K Ingleside stopped nearby from 1979 to 2015 High-level side platforms Yes Connection to M Ocean View at Boarding islands No Boarding islands with mini-high platforms Yes Boarding islands with mini-high platforms Yes Boarding islands No Boarding islands No Boarding islands No Boarding islands with mini-high platforms Yes Boarding islands No Boarding islands with mini-high platforms Yes Boarding islands with mini-high platforms Yes None No Bulb No Inbound stop closed on August 24, 2020 Boarding island with mini-high platform Yes Outbound stop closed on February 25, 2017 Boarding islands with mini-high platforms Yes Boarding islands with mini-high platforms Yes Consolidated from separate stops at 22nd Avenue and 23rd / 24th Avenues on February 25, 2017 Boarding islands No Boarding islands with mini-high platforms Yes Boarding islands No Boarding islands with mini-high platforms Yes Boarding islands No Boarding islands with mini-high platforms Yes Boarding islands No Boarding island (inbound only) No None No None No (San Francisco Zoo) Bulb with mini-high platform Yes Low-level side platforms No Low-level side platforms No High-level island platform Yes High-level island platform Yes None No None No Bulbs with mini-high platforms Yes None No None No None No Bulbs with mini-high platforms Yes Boarding islands No Boarding islands No Boarding island with lift (inbound) Yes Connection to J Church, K Ingleside, and BART at Side platforms with mini-high platforms Yes Bulbs with mini-high platforms Yes Bulb (inbound) No None No Bulbs with mini-high platforms Yes Bulbs with mini-high platforms Yes Replaced former stops at 4th Avenue and 7th Avenue Bulbs No Boarding islands with mini-high platforms Yes Boarding islands No None No Boarding islands No Boarding islands with mini-high platforms Yes Boarding islands No Boarding islands No Boarding islands with mini-high platforms Yes Boarding islands No Boarding islands No Boarding islands with mini-high platforms Yes Boarding islands No Boarding islands No Boarding islands No (Ocean Beach) Mini-high platform only Yes High-level island platform Yes High-level island platform Yes High-level island platform Yes High-level island platforms Yes N Judah and T Third Street use separate platforms High-level island platform (subway station) Yes High-level island platform (subway station) Yes Transfer to other Muni Metro lines and BART at Powell station High-level island platform (subway station) Yes High-level island platform Yes High-level side platforms Yes High-level island platform Yes High-level side platforms Yes High-level side platforms Yes High-level side platforms Yes High-level side platforms Yes High-level side platforms Yes High-level island platform Yes High-level island platform Yes High-level island platform Yes High-level island platform Yes High-level side platforms Yes High-level side platforms Yes High-level side platforms Yes High-level island platform Yes High-level island platform Yes High-level island platform Yes

Former stations

Prior to the late 1970s, there was a higher density of stops on the surface streetcar lines. Many of these stops were closed as the conversion to Muni Metro introduced longer trains and a desire for higher surface speeds. Most were had no infrastructure other than marked poles at street corners; several on the M Ocean View had small platforms. A number of stops on Market Street were closed when the Market Street subway opened; most are now served by the F Market & Wharves streetcar. Four stations with significant infrastructure were closed during conversion: Station Image Line(s) Service ended Platforms Notes Church and 19th Street Low-level side platforms Inside Dolores Park Low-level side platforms (subway station) Phelan Loop Low-level side platform Replaced by Transbay Terminal Low-level side platforms Streetcar loop on the north side of the terminal, separate from the elevated bus loops formerly used by Transbay trains

Several surface stops have closed during the Muni Metro era during station consolidation projects. Station Image Line(s) Service ended Platforms Notes None Consolidated into None Consolidated into Boarding islands Boarding islands None None None Consolidated into None Consolidated into

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