Round 4:
| Italy v Scotland Stadio Olimpico, Rome Saturday, 9 March, 2024 | Referee: Jaco Peyper (SARU) Assistant Referee 1: Karl Dickson (RFU) Assistant Referee 2: Adam Leal (RFU) TMO: Marius van der Westhuizen (SARU) |
| England v Ireland Twickenham Stadium, London Saturday, 9 March, 2024 | Referee: Nika Amashukeli (GRU) Assistant Referee 1: Andrea Piardi (FIR) Assistant Referee 2: Craig Evans (WRU) TMO: Ben Whitehouse (WRU) |
| Wales v France Principality Stadium, Cardiff Sunday, 10 March, 2024 | Referee: Luke Pearce (RFU) Assistant Referee 1: Andrew Brace (IRFU) Assistant Referee 2: Damian Schneider (UAR) TMO: Ian Tempest (RFU) |