NBC Building, Commercial tower in San Diego, California, US

225 Broadway is a 23-story, 306 ft (93 m) skyscraper in the Horton Plaza district of downtown San Diego, built in the International Style. It ranks as the city's 41st tallest building and was known as the NBC Building while housing KNSD from 2001 to 2016.

225 Broadway was home to NBC-owned KNSD from 2001 to 2016, when the station's presence earned it the name NBC Building and NBC signage on the facade. American Assets bought the tower in 2004 for $95.5 million. The sources give no construction date.

From 2001 to 2016 the tower housed KNSD, the NBC owned-and-operated station for San Diego, and during those years it carried NBC signage and was commonly called the NBC Building. The station has since moved out, so the name survives mainly in local usage and on maps.

The tower stands at 225 Broadway in the Horton Plaza district of downtown San Diego, within walking distance of the Horton Plaza shopping center and the Gaslamp Quarter. It is an office building rather than a public attraction, so interior floors and the former KNSD broadcast spaces are not open to visitors; the exterior and its place in the skyline can be seen from the street.

The building was bought by American Assets in 2004 for $95.5 million. From 2001 to 2016 it housed the NBC-owned station KNSD and carried NBC signage, which is why it is still called the NBC Building.