The 1888–89 season was the first season of football by Celtic, a football club set up the previous year in Glasgow, Scotland, with the purpose of alleviating poverty in the Irish–Scots population in the city's East End area.

Celtic ended their first ever Scottish Cup entry as runners-up, as they lost the final 1-2 to Third Lanark at the original Hampden Park.

Celtic lost the original final 3-0, but the SFA voided the result due to the poor conditions and the unplayable nature of the pitch through snow.

The match was ordered to be replayed the following week, on 9 February 1889, where Third Lanark won again with a 2–1 victory.

Win Draw Loss Postponed Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.