1984 Custom Credit Australian Indoor Championships – Singles

John McEnroe was the defending champion but did not compete that year.

Anders Järryd won in the final 6–3, 6–2, 6–4 against Ivan Lendl.

Seeds

 * 1)  Ivan Lendl (final)
 * 2) 🇸🇪 Anders Järryd (champion)
 * 3) 🇦🇺 Pat Cash (first round)
 * 4) 🇺🇸 Eliot Teltscher (semifinals)
 * 5) 🇦🇺 Paul McNamee (second round)
 * 6) 🇺🇸 Peter Fleming (quarterfinals)
 * 7) n/a
 * 8) 🇦🇺 John Fitzgerald (second round)