Episodes 74 – 97, including episodes shot on-location in London, for the two-part season finale that carried over into Season 5. The season finale is presented as a single episode on the Boxed Set.
4 - 1The One with the Jellyfish Sep. 25, 1997- 4 - 2The One with the Cat Oct. 02, 1997
- 4 - 3The One with the 'Cuffs Oct. 09, 1997
- 4 - 4The One with the Ballroom Dancing Oct. 16, 1997
- 4 - 5The One with Joey's New Girlfriend Oct. 30, 1997
- 4 - 6The One with the Dirty Girl Nov. 06, 1997
- 4 - 7The One Where Chandler Crosses the Line Nov. 13, 1997
- 4 - 8The One with Chandler in a Box Nov. 20, 1997
- 4 - 9The One Where They're Going to Party! Dec. 11, 1997
- 4 - 10The One with the Girl from Poughkeepsie Dec. 18, 1997
- 4 - 11The One with Phoebe's Uterus Jan. 08, 1998
- 4 - 12The One with the Embryos Jan. 15, 1998
- 4 - 13The One with Rachel's Crush Jan. 29, 1998
- 4 - 14The One with Joey's Dirty Day Feb. 05, 1998
- 4 - 15The One with All the Rugby Feb. 26, 1998
- 4 - 16The One with the Fake Party Mar. 19, 1998
- 4 - 17The One with the Free Porn Mar. 26, 1998
- 4 - 18The One with Rachel's New Dress Apr. 02, 1998
- 4 - 19The One with All the Haste Apr. 09, 1998
- 4 - 20The One with All the Wedding Dresses Apr. 16, 1998
- 4 - 21The One with the Invitation Apr. 23, 1998
- 4 - 22The One with the Worst Best Man Ever Apr. 30, 1998
- 4 - 23The One with Ross's Wedding (1) May. 07, 1998
- 4 - 24The One with Ross's Wedding (2) May. 07, 1998
