In use since 1634
Blazon: Per pale gules three lions passant guardant in pale or and chequy or and azure
The dexter half of the arms, which are the royal arms of England, probably refer to Stamford’s status as a royal borough. The sinister half belongs to the Warren or Warenne family, who controlled the region in the 13th century.
I feel sort of bad for Stamford, honestly. They get to use the royal arms (on top of using the Warren arms, which are some of the most iconic arms in English armory) but no crest? No supporters? Not even any mantling??? They’ve been ROBBED, I say. ROBBED.