Season 4 of Coupling originally aired on BBC2 from the 10th of May to the 14th of June, 2004. It comprised of six episodes.
- Nine and a Half Minutes
- Bed Time
- Circus of the Epidurals
- The Naked Living Room
- Nine and a Half Months
- Jack Davenport as Steve Taylor
- Sarah Alexander as Susan Walker
- Kate Isitt as Sally Harper
- Ben Miles as Patrick Maitland
- Gina Bellman as Jane Christie
- Richard Mylan as Oliver Morris
The fourth season was first broadcast on BBC3 in May and June 2004, although the six episodes were repeated on BBC2 a few months later.