See main article: 1990 Holden NSW Open. Darren Cahill and Wally Masur were the defending champions. Cahill did not compete that year, while Masur partnered Brad Drewett, but lost in the first round.
Pat Cash and Mark Kratzmann won the title, defeating Pieter Aldrich and Danie Visser 6–4, 7–5, in the final.