2019–20 Scarlets season
| 2019–20 season | |||
| Head coach | Brad Mooar Glenn Delaney | ||
|---|---|---|---|
| Chairman | Simon Muderack | ||
| Pro 14 | 3rd, conference B | ||
| European Rugby Challenge Cup | Quarter-finals | ||
| Top try scorer | League: Steff Evans – 9 All: Steff Evans – 11 | ||
| Top points scorer | League: Dan Jones – 74 All: Dan Jones – 95 | ||
| Highest home attendance | 13,682 vs. Ospreys (26 December 2019) | ||
| Lowest home attendance | 5,639 vs. Edinburgh (15 February 2020) | ||
| Average home attendance | 7,116 | ||
| |||
The 2019–20 season was the 16th season in the history of the Scarlets, a Welsh regional rugby union side based in Llanelli, Carmarthenshire. They competed in the Pro14 and after failing to qualify for the Champions Cup the previous season for the first time in their history, participated in the Challenge Cup.
It was the team's first and only season under head coach Brad Mooar, who was assisted by defence coach Glenn Delaney and assistant attack coach Richard Whiffin, following Wayne Pivac's departure to leathe Wales national team. On December 24, 2019, it was announced that Mooar would leave the Scarlets at the end of the season to join the New Zealand All Blacks' coaching team.
On 12 March 2020, the season was indefinitely suspended due to the COVID-19 pandemic. The regular season resumed on 22 August 2020, with the number of rounds reduced from 21 to 15; any postponed games were deemed 0-0 draws, with both teams awarded two points. Rounds 14 and 15 consisted of derbie matches for each Welsh region, with the top two teams in each conference advancing to the semi-final stage. Delaney took charge as head coach after Mooar's departure, leading the team in the games played in August and September 2020.