| 2018–19 Gallagher Premiership | |
| Champions: | Saracens (5th title) |
| Runnersup: | Exeter Chiefs |
| Relegated: | Newcastle Falcons |
| Matches: | 135 |
| Highest Attendance: | 82,000 Harlequins v Wasps 29 December 2018 |
| Lowest Attendance: | 5,586 Sale v Newcastle 6 October 2018 |
| Top Point Scorer: | George Ford (Leicester) (221 points) |
| Top Try Scorer: | Cobus Reinach (Northampton), Denny Solomona (Sale) (12 tries) |
| Website: | www.premiershiprugby.com |
| Prevseason: | 2017–18 |
| Nextseason: | 2019–20 |
The 2018–19 Gallagher Premiership was the 32nd season of the top flight English domestic rugby union competition and the first one to be sponsored by Gallagher.[1] The reigning champions entering the season were Saracens, who had claimed their fourth title after defeating Exeter Chiefs in the 2018 final. Bristol Bears had been promoted as champions from the 2017–18 RFU Championship at the first attempt.
The competition was broadcast by BT Sport for the sixth successive season and with five games also simulcast free-to-air on Channel 5. Highlights of each weekend's games were shown on Channel 5 with extended highlights on BT Sport.
Saracens won their fifth title after defeating Exeter Chiefs in the final at Twickenham after having finished second in the regular season table. Newcastle Falcons were relegated after being unable to win their penultimate game of the season. It was the third time that Newcastle have been relegated from the top flight since the leagues began and the first time since the 2011–12 Premiership Rugby season.
For the first time since 2004, there was no London Double Header at Twickenham due to redevelopment work causing the closure of the stadium.
Twelve teams compete in the league – the top eleven teams from the previous season and Bristol Bears who were promoted from the 2017–18 RFU Championship after a top flight absence of one year. They replaced London Irish who were relegated after one year in the top flight.
| Club | Director of Rugby/Head Coach | Captain | Kit supplier | Stadium | Capacity | City/Area | |
|---|---|---|---|---|---|---|---|
| Bath | Canterbury | The Recreation Ground | align=center | 14,509 | Bath | ||
| Bristol Bears | N/A (Leadership Group)[2] | Bristol Sport | Ashton Gate | align=center | 27,000 | Bristol | |
| Exeter Chiefs | Samurai Sportswear | Sandy Park | align=center | 12,921 | Exeter | ||
| Gloucester | XBlades | Kingsholm Stadium | align=center | 16,115 | Gloucester | ||
| Harlequins |