The Policeman is a minor character in Lady and the Tramp. He speaks with an Irish accent and is voiced by Bill Thompson.
He is first seen patrolling the entire area around the zoo. After Tramp whispers his plan to Lady about how they were going to sneak inside, Tramp whistles, barks and then leaps into the arms of an upper class professor. The Irish cop notices Tramp and then reprimands the professor for bringing his dog to the zoo when the sign says "No Dogs Allowed." Although the professor denies that Tramp is his dog, the Irish cop and professor eventually start fighting over the issue, thus allowing Lady and Tramp to enter the zoo unhindered. The Irish cop is not seen again throughout the rest of the movie.
Even though he does not make a full appearance, a policeman resembling him, only with a beard and mustache this time, can be seen during the final shot of "Welcome Home".