UP 841

A Lima Locomotive Works builder photo of UP FEF-3 locomotive No. 841.

Union Pacific No. 841 (or simply UP 841) is an ALCO FEF-3 type of 4-8-4 "Northern" type steam locomotive owned by Union Pacific Railroad. It was built in 1944 for the Union Pacific Railroad.

This locomotive was used for passenger and freight service on the Union Pacific Railroad.

The locomotive was retired from service in 1957 and it was sold for scrap.