The 1927–28 Scottish Cup was the 50th staging of Scotland's most prestigious football knockout competition.
The Cup was won by Rangers who defeated Celtic 4–0 in an Old Firm final;[1] it was their first victory in the competition for 25 years – the last had been in 1903, with four defeats in finals since then.
[2] All matches were played on 21 January 1928 with the exception of the Dumbarton/Hamilton Academical match which was postponed due to a waterlogged pitch and played four days later.
All remaining non-league teams were knocked out.
[3] Replays The matches were played on 8 February 1928.