Depot Bornheim, Transport depot in Bornheim district, Frankfurt, Germany

Depot Bornheim was a transport facility in Frankfurt with 13 indoor tracks and one outdoor track spanning a large area in the Bornheim district. The site served as a major hub for trams and was one of the city's more significant operational yards.

It opened in 1902 as a modern replacement for an older horse-drawn tram depot to meet growing transportation needs. The facility remained active until 2003, after which the site was redeveloped and repurposed.

Locals called it 'Kadolisches Debbo', a name reflecting the strong presence of the Catholic Workers' Movement in the neighborhood. This religious and social identity shaped daily life in the area for many generations.

The site is now housing built to passive-house standard, completed in summer 2009, with an underground garage beneath it. Three bays of the main car hall were rebuilt and have housed a REWE supermarket since late April 2008. The old drivers' and conductors' toilet hut was dismantled for the excavation and later rebuilt; it briefly held a Glockenbäckerei branch.

The Ebbelwei-Express, a heritage tram serving apple wine, used the depot's turning loop as its final stop. The loop's 25th anniversary was celebrated at the depot in 2002, a year before the site closed. On 17 October 2003 the first two S-series trams were presented here, with overhead line restored on one track.