There isn't necessarily a one to one correspondence. However, Judy or Judith are many times associated with the Hebrew name Yehudit. See http://www.answers.com/topic/yehudit
English names don't change pronunciation much when spoken with a Hebrew accent. Judy sounds pretty much the same in Hebrew as it does in English.
My name is Judy = Ich heiße Judy My name is Judy = Mein Name ist Judy (less common)
Judy Landers's birth name is Judy Hamburg.
Judy Sladky's birth name is Judy Schwomeyer.
Judy Farrell's birth name is Hayden, Judy.
Judy Dan's birth name is Judy Duyu.
Judy Chicago's birth name is Judy Cohen.
Judy Swank's birth name is Judy Clough.
Judy Keel's birth name is Judy Magamoll.
Judy Holliday
Judy Cornwell's birth name is Judy Valerie Cornwell.
Judy Simpson's birth name is Judy Elizabeth Simpson.