The Warfield Theatre, colloquially called The Warfield, is a 2,454 capacity event venue located in the Theatre District in downtown San Francisco, California, United States. It was built as a vaudeville theater and opened as the Loews Warfield on May 13, 1922.

In the 1920s, The Warfield was a popular location that featured vaudeville and other major performances, such as Al Jolson, Louis Armstrong, and Charlie Chaplin. The theater opened as the Loews Warfield, named after David Warfield. It later became known as the Fox Warfield. New life came to the Warfield in 1979 when Bob Dylan played 14 shows at the start of his first Gospel Tour in November 1979, and again 12 shows in November 1980 during his "A Musical Retrospective Tour". The Warfield had an appeal as a rock concert venue because it has more intimacy and better sound quality than an arena, yet has an occupancy of over 2,000 persons. Like many historic theaters, its main floor had the seats removed in the 1980s for general admission and dancing. Prior to the removal of the seats, Joe Strummer of The Clash once refused to play unless the first two rows of seats were removed to allow for dancing. It is a favorite venue for performance among many entertainers. In 1980, the Grateful Dead played 15 sold-out shows there, featuring both an acoustic and two electric sets. The shows were a celebration of the band's 15th anniversary and done as a show of appreciation for their loyal fans.

The Chicago room opened on 1 October 1996 at 329 North Dearborn, inside the Marina City complex on the river — the pair of round concrete towers everyone in the city calls the corn cobs. The 1,300-capacity hall was built as a piece of theatre in its own right, modelled on an opera house, with tiers of boxes facing the stage rather than the flat floor a club that size would normally have.

House of Blues is an American chain of live music concert halls and restaurants. It was founded by Isaac Tigrett, the co-founder of Hard Rock Cafe, and Dan Aykroyd, co-writer and co-star of the 1980 film The Blues Brothers. The first location opened at Harvard Square in Cambridge, Massachusetts, on November 26, 1992 (Thanksgiving Day). The chain has been a division of Live Nation Entertainment since July 2006, and there are 11 locations throughout the United States as of 2025.

The first House of Blues opened on November 26, 1992, in the Harvard Square commercial district and retail area of Cambridge, Massachusetts, as a live music concert hall and restaurant. The company was financed by Dan Aykroyd, Aerosmith, Paul Shaffer, River Phoenix, Jim Belushi, John Candy, and Harvard University, among others. This location closed in 2003 as the company sought a larger Boston venue. However, the hands-in-concrete driveway where members of the Blues Brothers and others left their mark, remains. Aykroyd is still associated with the brand and attends most openings, performing as one half of The Blues Brothers. In 1993 House of Blues launched a 501(c)(3) non-profit called International House of Blues Foundation which provided arts programs, resources and musical instruments for youths. The Music Forward Foundation continues to provide services for youth and has generated more than $20 million of support for these programs over its 20+ year existence. Also in 1993, the syndicated program The House of Blues Radio Hour launched in partnership with CBS Radio Hour. The show is hosted by Aykroyd, in character as Elwood Blues, and focuses on the history of blues music and the contemporary artists honoring the art form. Its final episode aired in July 2017. In 2024 The House of Blues Radio Hour was acquired by the U.S. Library of Congress.