| Scottish Cup | |
| Country: | Scotland |
| Num Teams: | 134 |
| Defending Champions: | Renton |
| Winners: | Queen's Park (Eighth title) |
| Second: | Renton |
| Matches: | 146 |
| Goals: | 881 |
| Prev Season: | 1884–85 |
| Next Season: | 1886–87 |
The 1885–86 Scottish Cup was the 13th season of Scotland's most prestigious football knockout competition. Queen's Park won the competition for the eighth time after they beat defending champions Renton 3–1 in the final.
Arbroath set a world record in the first round when they defeated Bon Accord 36–0 on 12 September 1885. The score remains a record in British senior football and globally for a match that was not fixed or thrown. Coincidentally, on the same day, Dundee Harp recorded an equally one-sided victory as they beat Aberdeen Rovers 35–0.
| Round | First match date | Fixtures | Clubs | |||
|---|---|---|---|---|---|---|
| width=55 | Original | width=55 | Byes | width=55 | Replays | |
| First Round | 5 September 1885 | 65 | 4 | 11 | 134 → 70 | |
| Second Round | 3 October 1885 | 33 | 4 | 9 | 70 → 37 | |
| Third Round | 24 October 1885 | 17 | 1 | 1 | 37 → 19 | |
| Fourth Round | 14 November 1885 | 9 | 1 | 2 | 19 → 10 | |
| Fifth Round | 5 December 1885 | 5 | 0 | 4 | 10 → 5 | |
| Quarter-finals | 16 January 1886 | 1 | 3 | 0 | 5 → 4 | |
| Semi-finals | 16 January 1886 | 2 | 0 | 0 | 4 → 2 | |
| Final | 13 February 1886 | 1 | 0 | 0 | 2 → 1 | |
All 134 teams entered the competition in the first round.
| Ayrshire | Dunbartonshire | Glasgow and Suburbs | Lanarkshire | Renfrewshire | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| valign=top | valign=top | valign=top | valign=top | valign=top | ||||||
| Edinburghshire | Fife and Perthshire | Northern Counties | Southern Counties | Stirlingshire | ||||||
| valign=top | valign=top | valign=top | valign=top | valign=top |
Pilgrims received a bye to the second round.
Alloa Athletic received a bye to the second round.
Dykehead received a bye to the second round.
Queen of the South Wanderers received a bye to the second round.
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Partick Thistle received a bye to the third round.
Cartvale received a bye to the third round.
West Calder received a bye to the third round.
Thornhill received a bye to the third round.
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Cambuslang received a bye to the fourth round.
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Port Glasgow Athletic received a bye to the fifth round.
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Queen's Park, Renton and 3rd Lanark RV received a bye to the semi-finals.
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See main article: 1886 Scottish Cup final.