Pokipsy (used to be Poughkeepsie, but she found that too hard to spell.)
Polar Bear
Polaris
Policy Wonk
Polina
Polini
Politix
Polka Dot
Pollux
Polly
Pollyanna
Polly-Esther
Pollygon
Polo
Poltergeist
Poly
Polyester
Pom
Pompidou (after the french prime minister George Pompidou)
Pom-Pom
Pompomdou
Ponce de Leon
Ponch (after the character in the TV series "CHiPs")
Ponchielli
Poncho
Poncy
Ponder
Pong
Pongo
Ponkles