2018–19 St Mirren F.C. season

Also on this day, Saints signed defender Paul McGinn on a two-year deal from relegated Partick Thistle.

[11] Also on this day, Saints were drawn against Kilmarnock, Dumbarton, Queen's Park and Spartans in the group stage of the Betfred Cup.

[28] Also on this day midfielder Cammy Smith joined Dundee United for an undisclosed fee, after stating that he wanted to play first team football,[57] and defender Adam Eckersley joined Scottish League One side Forfar Athletic on loan until the end of the season.

[56] Also on this day, defender Anton Ferdinand extends his contract until the end of the season.

[60] Also on this day the club signed Haitian striker Duckens Nazon from Belgian side Sint-Truiden and Romanian defender Laurențiu Corbu from Dinamo Bucureșt, both on loans until the end of the season.