Park Tower at Transbay is a 43-story, 605-foot (184 m) office skyscraper in San Francisco, California.

The tower is located on Block 5 of the San Francisco Transbay development plan at the corner of Beale and Howard Streets, near the Salesforce Transit Center.

[7] Block 5, an area bounded by Howard, Main, Beale and Natoma Streets, was formerly a state-owned parcel used for ramps leading to the since-demolished Transbay Terminal and Embarcadero Freeway.

[9] Four development teams submitted proposals for the site: Boston Properties with Kohn Pedersen Fox; Golub Real Estate and The John Buck Company with Goettsch Partners and Solomon Cordwell Buenz; Jay Paul Company with Skidmore, Owings & Merrill; and Kilroy Realty with Pelli Clarke Pelli.

[10] The proposal from Golub Real Estate and The John Buck Company was ultimately selected,[11] featuring a number of large, outdoor terraces on both the northwest and southeast corners of the building.