The Q69 and Q100 Limited bus routes constitute a public transit line in western Queens, New York City.

Northbound service makes a clockwise loop south along Jackson Avenue and west on 44th Drive (passing One Court Square and the Court Square subway complex), then travels north on 21st Street.

[12] Prior to the MTA takeover, the then-Q101R operated non-stop between 21st Street–Queensbridge and the Queens Rikers Island parking lot.

[21] In the 1920s, the Woodside-Astoria Transportation Company, founded by Salvatore Fornatora, began operating the Q18, Q19, Q19A, and Q24 routes.

[23] Starting on August 10, 1934, the Q19A ran from the Ditmars station, was diverted from the ferry slip, and was extended along 21st Street to Queens Plaza, where it began competing with the parallel 31st Street and Vernon Boulevard streetcar lines of the Steinway Railway (now the Q102 and Q103 buses respectively).

Zone A in Western Queens (Woodside, Astoria, and Long Island City), which included the Q19A, was awarded to Triboro Coach.

[26] In 1938, Triboro was asked by the Steinway Community Council to extend service along Ditmars Boulevard to East Elmhurst[27][28] and in 1939, the company proposed the Q33A route along Ditmars as an extension to their existing Q33 franchise to serve the request.

During off-peak hours, the Q33A was extended to 102nd Street and Astoria Boulevard, the terminus of what was then the Q19B route (now the Q49) and at that time the terminal of the Q19.

[30] During the late 1940s and early 1950s, there were often complaints of overcrowding and bad headways on the Q19A, such as from the Taminent Democratic Club of Long Island City.

In May 1949, Triboro Coach appealed to the police commissioner for permission to move the bus stop north to the corner of Ditmars Boulevard and 31st Street and two months later a permit was approved.

In October 1949, the bus stop was shifted back to the station stairs following protests from commuters.

This shift back to the stairs was made under a different, albeit temporary, permit but the first permit for the stop at the corner was not revoked, and so at the end of April 1950, Triboro decided to shift the bus stop back to the corner, this time due to several accidents with the pillars of the Astoria elevated line.

[43] As a result, the service began being labeled the Q101R in the early 1990s,[44][45] with the Q101 truncated to Hazen Street and 19th Avenue, no longer serving Rikers Island.

[50][51] As part of the redesign, the Q69 bus would have become an "intra-borough" route called the QT69, running south to Hunters Point rather than to Long Island City.

[55] As part of the new plan, the Q69 will instead become a "zone" route with a nonstop section on 21st Street between Broadway and 40th Avenue.

[62] On January 29, 2025, the current plan was approved by the MTA Board, and the Queens Bus Redesign will go into effect by Labor Day.

[63] On June 29, 2016, a fire truck collided with a Q100 bus traveling northward on 21st Street at Ditmars Blvd.