Heron Tower, located at and also referred to as 110 Bishopsgate, is a skyscraper owned by Heron International in London, United Kingdom. It was completed in 2011.

Heron Tower stands 230 m tall including its 28 m mast, or 202 m excluding the mast - making it the tallest building in the City of London and the third tallest in Greater London, after One Canada Square and Shard London Bridge.

Designed by architects Kohn Pedersen Fox, the height of Heron Tower was planned to be 183 m, identical to that of the City of London's then tallest building, Tower 42.

The skyscraper attracted some controversy when first announced due to its proximity to St Paul's Cathedral when viewed from Waterloo Bridge. English Heritage was notably vocal in expressing concerns. A public inquiry was subsequently held, the outcome of which was decided by deputy prime minister John Prescott, who ruled in the developers' favour. The tower was given final approval for construction in July 2002.

Three years later, the project had yet to begin construction. In September 2005 the Heron Property Corporation submitted a planning application to increase the height of its approved building. Heron's revised plans now proposed a 202-metre (663 ft) tall tower topped by a 28-metre (92 ft) mast, giving it a 230-metre (755 ft) total height. Although the design was largely identical to the previous scheme, the tower's crown and southern façades were refined. In January 2006, the revised project was approved by the City of London Corporation.