Hunter-Dulin Building, French Renaissance Revival skyscraper in Financial District, San Francisco, United States

The Hunter–Dulin Building is a 25-story, 94 m (308 ft) class A office building at 111 Sutter Street in Downtown San Francisco, completed in 1927 and designed by Schultze & Weaver. It was fully restored and renovated between 1999 and 2001 and was listed on the National Register of Historic Places on April 17, 1997.

Completed in 1927 to designs by Schultze & Weaver, the Hunter–Dulin Building served as NBC's West Coast headquarters from 1927 to 1942, with executive offices on the 21st floor and studios on the 22nd. It was listed on the National Register of Historic Places on April 17, 1997, and fully restored and renovated between 1999 and 2001.

Dashiell Hammett set the office of his detective agency Spade & Archer at 111 Sutter Street in the 1930 novel The Maltese Falcon, placing Sam Spade's office on the fifth floor. The address is a stop for readers tracing the book's San Francisco locations.

The building stands at 111 Sutter Street, between Montgomery and Sansome Streets in the Financial District, a short walk from the Montgomery Street BART and Muni station. It is a working class A office building, so interior floors are not open to the public; the 1927 stone exterior and entrance can be viewed from the sidewalk.

The 22nd floor, once NBC's studio offices, was later occupied by peer-to-peer lending firm Prosper Marketplace. As of May 2023, the San Francisco Chronicle reported the building's vacancy rate at 43.9% amid the neighborhood's worst office vacancy crisis on record.