| Rawmarsh and Conisbrough | John Healey | Labour | 1 May 1997 |
| Rayleigh and Wickford | Mr Mark Francois | Conservative | 7 June 2001 |
| Reading Central | Matt Rodda | Labour | 8 June 2017 |
| Reading West and Mid Berkshire | Olivia Bailey | Labour | 4 July 2024 |
| Redcar | Anna Turley | Labour (Co-op) | 4 July 2024 |
| Redditch | Chris Bloore | Labour | 4 July 2024 |
| Reigate | Rebecca Paul | Conservative | 4 July 2024 |
| Rhondda and Ogmore | Chris Bryant | Labour | 7 June 2001 |
| Ribble Valley | Maya Ellis | Labour | 4 July 2024 |
| Richmond and Northallerton | Rishi Sunak | Conservative | 7 May 2015 |
| Richmond Park | Sarah Olney | Liberal Democrat | 12 December 2019 |
| Rochdale | Paul Waugh | Labour (Co-op) | 4 July 2024 |
| Rochester and Strood | Lauren Edwards | Labour | 4 July 2024 |
| Romford | Andrew Rosindell | Reform UK | 7 June 2001 |
| Romsey and Southampton North | Caroline Nokes | Conservative | 6 May 2010 |
| Rossendale and Darwen | Andy MacNae | Labour | 4 July 2024 |
| Rother Valley | Jake Richards | Labour | 4 July 2024 |
| Rotherham | Sarah Champion | Labour | 29 November 2012 |
| Rugby | John Slinger | Labour | 4 July 2024 |
| Ruislip, Northwood and Pinner | David Simmonds | Conservative | 12 December 2019 |
| Runcorn and Helsby | Sarah Pochin | Reform UK | 1 May 2025 |
| Runnymede and Weybridge | Dr Ben Spencer | Conservative | 12 December 2019 |
| Rushcliffe | James Naish | Labour | 4 July 2024 |
| Rutherglen | Michael Shanks | Labour | 5 October 2023 |
| Rutland and Stamford | Alicia Kearns | Conservative | 12 December 2019 |