Ursula Pamela Buffay was a fictional character from the popular television sitcom Friends which ran from 1994 to 2004. She was twin sister to Phoebe, and, like Phoebe, was played by Lisa Kudrow.

Ursula originally appeared as a ditzy waitress in the sitcom Mad About You, which is also set in New York. When the series Friends started, the character crossed over.

Ursula often appeared mean to her sister who is still upset by the things Ursula did to her when they were young, for example, throwing her Judy Jetson thermos under a bus and stealing her first boyfriend. Naturally, Phoebe became worried when Ursula dated Joey.

In later years, Ursula worked in the pornography industry under the pseudonym "Phoebe Buffay".

On the last episode of Mad About You, it was revealed that Ursula will become the governor of New York in the near future.