As one of the bottom eight teams at that point, Connacht were entered into the Challenge Cup in the round of 16 where they were beaten by the Leicester Tigers.

Note: Flags indicate national union as has been defined under WR eligibility rules.

Props Hookers Locks Back row Scrum-halves Fly-halves Centres Wings Fullbacks Props Hookers Locks Back row Scrum-halves Fly-halves Centres Wings Fullbacks Unlike most seasons, where the bulk of transfers occur during the summer pre-season the 2019–20 season saw two separate periods of major transfer activity.

Many moves scheduled to happen at the end of the season instead took place during the extended hiatus from March to August 2020.

Despite these moves technically happening during the previous season, they are included in the transfers listed here.