| Season: | 1970–71 |
| League Result: | 6th |
| Cup1 Result: | Fourth round |
| Cup2 Result: | Fourth round |
| Cup3 Result: | Winners |
| Cup4 Result: | Runners-up |
| Pattern B1: | _chelsea1965h |
| Leftarm1: | 0000FF |
| Body1: | FFFFFF |
| Rightarm1: | 0000FF |
| Shorts1: | 0000FF |
| Socks1: | ffffff |
| Pattern B2: | _chelsea1967a |
| Leftarm2: | FFFF00 |
| Body2: | FFFF00 |
| Rightarm2: | FFFF00 |
| Shorts2: | 0000FF |
| Socks2: | ffff00 |
| League Topscorer: | Keith Weller (13) |
| Season Topscorer: | Keith Weller (14) |
| Highest Attendance: | 61,277 vs Tottenham Hotspur (14 November 1970) |
| Lowest Attendance: | 14,356 vs Burnley (26 April 1971) |
| Prevseason: | 1969–70 |
| Nextseason: | 1971–72 |
The 1970–71 season was Chelsea Football Club's 57th of competitive football, and their 44th in the English top flight.
| Pos. | Name | League | FA Cup | League Cup | Cup Winners' Cup | Charity Shield | Total | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | |||
| GK | Peter Bonetti | 28 | 0 | 3 | 0 | 4 | 0 | 6 | 0 | 1 | 0 | 42 | 0 | |
| GK | John Phillips | 14 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 18 | 0 | |
| DF | John Dempsey | 31(2) | 1 | 1(1) | 0 | 2 | 0 | 7 | 1 | 0 | 0 | 41(3) | 2 | |
| DF | Micky Droy | 4(1) | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5(1) | 0 | |
| DF | Ron Harris | 38 | 1 | 3 | 0 | 4 | 0 | 10 | 0 | 1 | 0 | 56 | 1 | |
| DF | Marvin Hinton | 20 | 1 | 3 | 0 | 2 | 0 | 3 | 1 | 1 | 0 | 29 | 2 | |
| DF | Stewart Houston | 0 | 0 | 0 | 0 | 1(1) | 0 | 0 | 0 | 0 | 0 | 1(1) | 0 | |
| DF | Eddie McCreadie | 14(1) | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 16 | 0 | |
| DF | Paddy Mulligan | 17(1) | 1 | 0 | 0 | 3 | 0 | 6(1) | 0 | 1 | 0 | 27 | 1 | |
| DF | David Webb | 34 | 4 | 3 | 0 | 4 | 1 | 10 | 1 | 1 | 0 | 52 | 1 | |
| MF | John Boyle | 20(1) | 0 | 3 | 0 | 1 | 0 | 6(2) | 0 | 0 | 0 | 30(3) | 0 | |
| MF | Charlie Cooke | 31(3) | 1 | 3 | 0 | 3 | 0 | 8 | 0 | 0 | 0 | 45(3) | 1 | |
| MF | Alan Hudson | 34(1) | 3 | 0 | 0 | 1 | 0 | 9 | 0 | 1 | 0 | 45(1) | 3 | |
| MF | John Hollins | 40 | 6 | 3 | 0 | 4 | 1 | 8 | 2 | 1 | 0 | 56 | 9 | |
| MF | Peter Houseman | 37(1) | 4 | 3 | 1 | 4 | 0 | 9 | 1 | 1 | 0 | 54(1) | 6 | |
| MF/FW | Keith Weller | 36(4) | 13 | 3 | 0 | 3 | 1 | 8(1) | 0 | 1 | 0 | 51(5) | 14 | |
| MF/FW | Tommy Baldwin | 18 | 2 | 2 | 2 | 2 | 1 | 7(3) | 2 | 0 | 0 | 29(3) | 7 | |
| FW | Peter Feely | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | |
| FW | Ian Hutchinson | 20 | 3 | 1 | 0 | 3 | 1 | 3 | 3 | 1 | 1 | 28 | 8 | |
| FW | Peter Osgood | 27 | 5 | 3 | 1 | 3 | 2 | 8 | 4 | 1 | 0 | 42 | 12 | |
| FW | Derek Smethurst | 12 | 3 | 0 | 0 | 0 | 0 | 3(1) | 1 | 0 | 0 | 16(1) | 4 | |
| Date | Opponent | Venue | Result | Attendance | Scorers | |
|---|---|---|---|---|---|---|
| 15 August 1970 | Derby County | H | 2–1 | 46,969 | Hutchinson (2) | |
| 19 August 1970 | Manchester United | A | 0–0 | 50,979 | ||
| 22 August 1970 | West Ham United | A | 2–0 | 39,240 | Weller (2) | |
| 26 August 1970 | Everton | H | 2–2 | 48,195 | Mulligan, Hollins | |
| 29 August 1970 | Arsenal | H | 2–1 | 53,722 | Mulligan, Hollins | |
| 1 September 1970 | Burnley | A | 0–0 | 14,543 | ||
| 5 September 1970 | Leeds United | A | 0–1 | 47,662 | ||
| 12 September 1970 | Wolverhampton Wanderers | H | 2–2 | 34,889 | Harris, Hutchinson | |
| 19 September 1970 | Coventry City | A | 1–0 | 29,328 | Hollins | |
| 26 September 1970 | Ipswich Town | H | 2–1 | 38,541 | Hudson, Osgood | |
| 3 October 1970 | Liverpool | A | 0–1 | 46,196 | ||
| 10 October 1971 | Manchester City | H | 1–1 | 51,903 | Weller | |
| 17 October 1970 | Derby County | A | 2–1 | 35,166 | Weller (2) | |
| 24 October 1970 | Blackpool | A | 4–3 | 24,940 | Webb, Weller (2), Hatton (o.g.) | |
| 31 October 1970 | Southampton | H | 2–2 | 44,843 | Hollins, Webb | |
| 7 November 1970 | Huddersfield Town | A | 1–0 | 24,631 | Baldwin | |
| 14 November 1970 | Tottenham Hotspur | H | 0–2 | 61,277 | ||
| 21 November 1970 | Stoke City | H | 2–1 | 36,227 | Osgood, Bernard (o.g.) | |
| 28 November 1970 | West Bromwich Albion | A | 2–2 | 29,374 | Weller, Cooke | |
| 5 December 1970 | Newcastle United | H | 1–0 | 39,413 | Weller | |
| 12 December 1970 | Nottingham Forest | A | 1–1 | 20,080 | Weller | |
| 19 December 1970 | West Ham United | H | 2–1 | 42,075 | Osgood (2) | |
| 9 January 1971 | Manchester United | H | 1–2 | 53,482 | Hudson | |
| 13 January 1971 | Crystal Palace | A | 0–0 | 40,489 | ||
| 16 January 1971 | Everton | A | 0–3 | 43,648 | ||
| 30 January 1971 | West Bromwich Albion | H | 4–1 | 26,874 | Hollins (2), Hutchinson, Smethurst | |
| 6 February 1971 | Newcastle United | A | 1–0 | 34,366 | Hudson | |
| 13 February 1971 | Wolverhampton Wanderers | A | 0–1 | 34,110 | ||
| 17 February 1971 | Nottingham Forest | H | 2–0 | 19,339 | Hollins, O'Kane (o.g.) | |
| 20 February 1971 | Stoke City | A | 2–1 | 26,959 | Smethurst, Hutchinson | |
| 27 February 1971 | Southampton | A | 0–0 | 29,937 | ||
| 6 March 1971 | Blackpool | H | 2–0 | 26,530 | Baldwin, Webb | |
| 13 March 1971 | Tottenham Hotspur | A | 1–2 | 49,292 | Weller | |
| 20 March 1971 | Huddersfield Town | H | 0–0 | 28,207 | ||
| 27 March 1971 | Leeds United | H | 3–1 | 58,452 | Osgood, Houseman (2) | |
| 3 April 1971 | Arsenal | A | 0–2 | 62,087 | ||
| 10 April 1971 | Crystal Palace | H | 1–1 | 38,953 | Webb | |
| 12 April 1971 | Liverpool | H | 1–0 | 38,705 | Lindsay (o.g.) | |
| 17 April 1971 | Manchester City | A | 1–1 | 26,120 | Weller | |
| 24 April 1971 | Coventry City | H | 2–1 | 27,517 | Smethurst, Feely | |
| 26 April 1971 | Burnley | H | 0–1 | 14,356 | ||
| 1 May 1971 | Ipswich Town | A | 0–0 | 24,708 |
| Date | Round | Opponent | Venue | Result | Attendance | Scorers | |
|---|---|---|---|---|---|---|---|
| 9 September 1970 | R2 | Sheffield Wednesday | A | 1–1 | 15,869 | Osgood | |
| 22 September 1970 | R2 (R) | Sheffield Wednesday | H | 2–1 | 26,646 | Webb, Osgood (pen.) | |
| 7 October 1970 | R3 | Middlesbrough | H | 3–2 | 28,597 | Weller, Baldwin, Hutchinson | |
| 28 October 1970 | R4 | Manchester United | A | 1–2 | 47,565 | Hollins |
| Date | Round | Opponent | Venue | Result | Attendance | Scorers | |
|---|---|---|---|---|---|---|---|
| 16 September 1970 | R1 | Aris Salonika | A | 1–1 | 50,000 | Hutchinson | |
| 30 September 1970 | R1 | Aris Salonika | H | 5–1 | 40,425 | Hollins (2), Hinton, Hutchinson (2) | |
| 21 October 1970 | R2 | CSKA Sofia | A | 1–0 | 45,000 | Baldwin | |
| 4 November 1970 | R2 | CSKA Sofia | H | 1–0 | 41,613 | Webb | |
| 10 March 1971 | QF | Club Brugge | A | 0–2 | 23,000 | ||
| 24 March 1971 | QF | Club Brugge | H | 4–0 (a.e.t.) | 45,558 | Baldwin, Osgood (2), Houseman | |
| 14 April 1971 | SF | Manchester City | H | 1–0 | 45,595 | Smethurst | |
| 28 April 1971 | SF | Manchester City | A | 1–0 | 43,663 | Healey (o.g.) | |
| 19 May 1971 | F | Real Madrid | N | 1–1 (a.e.t.) | 45,000 | Osgood | |
| 21 May 1971 | F | Real Madrid | N | 2–1 | 24,000 | Dempsey, Osgood |
| Date | Round | Opponent | Venue | Result | Attendance | Scorers | |
|---|---|---|---|---|---|---|---|
| 2 January 1971 | R3 | Crystal Palace | A | 2–2 | 42,123 | Baldwin, Osgood | |
| 6 January 1971 | R3 (R) | Crystal Palace | H | 2–0 | 55,074 | Baldwin, Houseman | |
| 23 January 1971 | R4 | Manchester City | H | 0–3 | 50,176 |