Smudge (died 2000) was a Scottish cat who became a minor celebrity in Glasgow.

[1] She was employed by the People's Palace museum in Glasgow Green to deal with a rodent problem in 1979.

In 1987, Smudge disappeared for a number of weeks, but after many appeals (including one by the Lord Provost of Glasgow) she was recovered.

Smudge left the People's Palace in 1990 with the departure of Elspeth King, the museum's curator.

A plaque is now dedicated to the memory of Sister Smudge at one of the side entrances to the People's Palace; it reads: Sister Smudge (c 1970 – 2000) was a much loved employee of the People's Palace and the only cat to be a full member of the GMB Union