The original Ford Cologne V6 is a series of 60° cast iron block V6 engines produced continuously by the Ford Motor Company in Cologne, Germany, since 1965. Along with the British Ford Essex V6 engine and the U.S. Buick V6 and GMC Truck V6, these were among the first mass-produced V6 engines in the world.

During its production run, the Cologne V6 has evolved through engine displacements of 1.8, 2.0, 2.3, 2.4, 2.6, 2.8, 2.9, and 4.0 litres. All except the Cosworth 24v derivative and later 4.0 litre SOHC engines were pushrod overhead-valve engines, with a single camshaft between the banks.

Originally, the Cologne V6 was installed in vehicles intended for Germany and Continental Europe, while the unrelated British Essex V6 was used in cars for the British market. Later, the Cologne V6 largely replaced the Essex V6 for British-market vehicles. These engines were also used in the United States, especially in compact trucks.

The Cologne V6 was designed to be compatible in installation with the Ford Taunus V4 engine, having the same transmission bolt pattern, the same engine mounts, and in many versions, a cylinder head featuring "siamesed" exhaust passages, which reduced the three exhaust outlets down to two on each side. The latter feature was great for compatibility, but poor for performance. The 2.4, 2.8 (in U.S.), 2.9, and 4.0 had three exhaust ports, making them preferable.

The engine was available in both carburetted and fuel-injected forms.