| Irish League Cup | |
| Other Titles: | Roadferry Freight League Cup |
| Year: | 1989–90 |
| Num Teams: | 30 |
| Defending Champions: | Glentoran |
| Winners: | Glenavon (1st win) |
| Second: | Newry Town |
| Matches: | 29 |
| Goals: | 120 |
| Prev Season: | 1988–89 |
| Next Season: | 1990–91 |
The 1989–90 Irish League Cup (known as the Roadferry Freight League Cup for sponsorship reasons) was the 4th edition of the Irish League Cup, Northern Ireland's secondary football knock-out cup competition. It concluded on 19 December 1989 with the final.
Glentoran unsuccessfully defended its 1989 title in the quarterfinal losing to Portadown. Portadown unsuccessfully defended its pursuit of the cup in the semifinals losing to Newry Town. Newry Town would unsuccessfully defend its pursuit of the title in the final losing to Glenavon, 3–1.[1] [2]
Ballyclare Comrades and Omagh Town both received byes into the second round.
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