The 1991 AFL season was the 95th season of the Australian Football League (AFL), which was known previously as the Victorian Football League until 1989. The season ran from 22 March until 28 September, and comprised a 22-game home-and-away season followed by a finals series featuring the top six clubs, an increase from the top five clubs which had contested the finals since 1972.
The season saw expansion of the league to fifteen clubs, with the admission of the newly established Adelaide Crows, based in Adelaide, South Australia. With at least one team representing each of the three major Australian rules football states, the league was now the highest level senior Australian rules football competition across Australia, as well as the top administrative body for football in Victoria.
The premiership was won by the Hawthorn Football Club for the ninth time, after defeating West Coast by 53 points in the 1991 AFL Grand Final.
Foster's Cup
defeated 14.19 (103) to 7.12 (54) in the final.
Home-and-away season
The league expanded to 15 teams with the admission of the Adelaide Crows, meaning byes were required for the first time since 1943.
Each team played 22 games for the season with two byes: seven teams had a bye in round 1, and one team had a bye in each subsequent round.
Round 1
Round 2
! Home team ! Home team score ! Away team ! Away team score ! Ground ! Crowd ! Date |- bgcolor="#FFFFFF" ||| 8.10 (58) |||| 13.7 (85) ||Waverley Park|| 39,266 ||Saturday 30, March |- bgcolor="#FFFFFF" ||| 6.13 (49) |||| 27.18 (180) ||Princes Park|| 11,278 ||Saturday 30, March |- bgcolor="#FFFFFF" ||| 8.10 (58) |||| 15.14 (104) ||Carrara Stadium|| 5,724 ||Saturday 30, March |- bgcolor="#FFFFFF" ||| 12.9 (81) |||| 15.14 (104) ||Football Park|| 43,850 ||Sunday 31, March |- bgcolor="#FFFFFF" ||| 17.7 (109) |||| 16.17 (113) ||MCG|| 31,793 ||Monday 1, April |- bgcolor="#FFFFFF" ||| 18.22 (130) |||| 16.8 (104) ||Kardinia Park|| 26,303 ||Monday 1, April |- bgcolor="#FFFFFF" ||| 25.16 (166) |||| 10.15 (75) ||Princes Park|| 13,815 ||Monday 1, April
Round 3
! Home team ! Home team score ! Away team ! Away team score ! Ground ! Crowd ! Date |- bgcolor="#FFFFFF" ||| 18.19 (127) |||| 9.16 (70) ||Princes Park|| 16,651 ||Saturday 6, April |- bgcolor="#FFFFFF" ||| 16.21 (117) |||| 8.10 (58) ||Victoria Park|| 24,691 ||Saturday 6, April |- bgcolor="#FFFFFF" ||| 13.16 (94) |||| 25.17 (167) ||MCG|| 24,961 ||Saturday 6, April |- bgcolor="#FFFFFF" ||| 20.16 (136) |||| 11.13 (79) ||Waverley Park|| 25,960 ||Saturday 6, April |- bgcolor="#FFFFFF" ||| 10.8 (68) |||| 15.27 (117) ||Whitten Oval|| 20,875 ||Sunday 7, April |- bgcolor="#FFFFFF" ||| 21.19 (145) |||| 24.10 (154) ||MCG|| 27,266 ||Sunday 7, April |- bgcolor="#FFFFFF" ||| 15.18 (108) |||| 19.18 (132) ||SCG|| 10,649 ||Sunday 7, April
Round 4
Round 5
! Home team ! Home team score ! Away team ! Away team score ! Ground ! Crowd ! Date |- bgcolor="#FFFFFF" ||| 19.16 (130) |||| 24.17 (161) ||SCG|| 13,140 ||Friday 19, April |- bgcolor="#FFFFFF" ||| 16.19 (115) |||| 14.9 (93) ||Victoria Park|| 20,403 ||Saturday 20, April |- bgcolor="#FFFFFF" ||| 12.17 (89) |||| 16.17 (113) ||Princes Park|| 12,124 ||Saturday 20, April |- bgcolor="#FFFFFF" ||| 17.16 (118) |||| 16.11 (107) ||Waverley Park|| 21,448 ||Saturday 20, April |- bgcolor="#FFFFFF" ||| 28.14 (182) |||| 17.10 (112) ||MCG|| 22,928 ||Saturday 20, April |- bgcolor="#FFFFFF" ||| 13.17 (95) |||| 8.10 (58) ||Kardinia Park|| 27,365 ||Sunday 21, April |- bgcolor="#FFFFFF" ||| 19.16 (130) |||| 9.11 (65) ||Subiaco Oval|| 34,704 ||Sunday 21, April
Round 6
! Home team ! Home team score ! Away team ! Away team score ! Ground ! Crowd ! Date |- bgcolor="#FFFFFF" ||| 10.17 (77) |||| 17.11 (113) ||Waverley Park|| 55,735 ||Thursday 25, April |- bgcolor="#FFFFFF" ||| 27.26 (188) |||| 21.8 (134) ||MCG|| 15,664 ||Thursday 25, April |- bgcolor="#FFFFFF" ||| 13.16 (94) |||| 7.18 (60) ||Princes Park|| 29,005 ||Saturday 27, April |- bgcolor="#FFFFFF" ||| 13.11 (89) |||| 19.20 (134) ||Waverley Park|| 33,905 ||Saturday 27, April |- bgcolor="#FFFFFF" ||| 12.11 (83) |||| 16.18 (114) ||Carrara Stadium|| 9,253 ||Saturday 27, April |- bgcolor="#FFFFFF" ||| 11.8 (74) |||| 36.15 (231) ||North Hobart Oval|| 13,335 ||Sunday 28, April |- bgcolor="#FFFFFF" ||| 19.14 (128) |||| 14.13 (97) ||Football Park|| 36,695 ||Sunday 28, April
Round 7
Round 8
! Home team ! Home team score ! Away team ! Away team score ! Ground ! Crowd ! Date |- bgcolor="#FFFFFF" ||| 18.14 (122) |||| 11.12 (78) ||Waverley Park|| 29,727 ||Saturday 11, May |- bgcolor="#FFFFFF" ||| 13.9 (87) |||| 14.10 (94) ||Windy Hill|| 21,438 ||Saturday 11, May |- bgcolor="#FFFFFF" ||| 10.10 (70) |||| 21.21 (147) ||Princes Park|| 7,416 ||Saturday 11, May |- bgcolor="#FFFFFF" ||| 17.19 (121) |||| 12.10 (82) ||MCG|| 23,617 ||Saturday 11, May |- bgcolor="#FFFFFF" ||| 17.17 (119) |||| 22.18 (150) ||Kardinia Park|| 17,746 ||Saturday 11, May |- bgcolor="#FFFFFF" ||| 24.15 (159) |||| 15.12 (102) ||MCG|| 28,322 ||Sunday 12, May |- bgcolor="#FFFFFF" ||| 12.7 (79) |||| 21.22 (148) ||Gabba|| 9,828 ||Sunday 12, May
Round 9
! Home team ! Home team score ! Away team ! Away team score ! Ground ! Crowd ! Date |- bgcolor="#FFFFFF" ||| 18.12 (120) |||| 18.10 (118) ||MCG|| 16,175 ||Friday 17, May |- bgcolor="#FFFFFF" ||| 13.15 (93) |||| 12.9 (81) ||Princes Park|| 23,087 ||Saturday 18, May |- bgcolor="#FFFFFF" ||| 13.12 (90) |||| 18.24 (132) ||Victoria Park|| 26,262 ||Saturday 18, May |- bgcolor="#FFFFFF" ||| 15.13 (103) |||| 13.9 (87) ||Waverley Park|| 40,537 ||Saturday 18, May |- bgcolor="#FFFFFF" ||| 15.11 (101) |||| 14.12 (96) ||Whitten Oval|| 10,585 ||Saturday 18, May |- bgcolor="#FFFFFF" ||| 17.23 (125) |||| 3.8 (26) ||Subiaco Oval|| 23,586 ||Sunday 19, May |- bgcolor="#FFFFFF" ||| 16.17 (113) |||| 18.11 (119) ||SCG|| 13,284 ||Sunday 19, May
Round 10
! Home team ! Home team score ! Away team ! Away team score ! Ground ! Crowd ! Date |- bgcolor="#FFFFFF" ||| 15.16 (106) |||| 10.12 (72) ||Football Park|| 43,722 ||Friday 24, May |- bgcolor="#FFFFFF" ||| 16.12 (108) |||| 23.13 (151) ||Waverley Park|| 45,595 ||Saturday 25, May |- bgcolor="#FFFFFF" ||| 11.15 (81) |||| 16.13 (109) ||Moorabbin Oval|| 33,832 ||Saturday 25, May |- bgcolor="#FFFFFF" ||| 19.13 (127) |||| 14.22 (106) ||Princes Park|| 10,214 ||Saturday 25, May |- bgcolor="#FFFFFF" ||| 21.15 (141) |||| 18.19 (127) ||MCG|| 17,254 ||Saturday 25, May |- bgcolor="#FFFFFF" ||| 10.15 (75) |||| 12.10 (82) ||Carrara Stadium|| 7,330 ||Sunday 26, May |- bgcolor="#FFFFFF" ||| 15.16 (106) |||| 10.12 (72) ||Subiaco Oval|| 33,498 ||Sunday 26, May
Round 11
! Home team ! Home team score ! Away team ! Away team score ! Ground ! Crowd ! Date |- bgcolor="#FFFFFF" ||| 18.22 (130) |||| 17.12 (114) ||MCG|| 28,299 ||Saturday 1, June |- bgcolor="#FFFFFF" ||| 12.14 (86) |||| 12.8 (80) ||Windy Hill|| 21,635 ||Saturday 1, June |- bgcolor="#FFFFFF" ||| 27.15 (177) |||| 14.9 (93) ||Kardinia Park|| 17,644 ||Saturday 1, June |- bgcolor="#FFFFFF" ||| 10.17 (77) |||| 15.13 (103) ||Princes Park|| 20,832 ||Saturday 1, June |- bgcolor="#FFFFFF" ||| 12.8 (80) |||| 17.15 (117) ||Waverley Park|| 15,476 ||Saturday 1, June |- bgcolor="#FFFFFF" ||| 8.9 (57) |||| 1.10 (16) ||Whitten Oval|| 16,036 ||Sunday 2, June |- bgcolor="#FFFFFF" ||| 18.13 (121) |||| 26.12 (168) ||SCG|| 7,657 ||Sunday 2, June
Round 12
! Home team ! Home team score ! Away team ! Away team score ! Ground ! Crowd ! Date |- bgcolor="#FFFFFF" ||| 12.10 (82) |||| 10.2 (62) ||Waverley Park|| 39,832 ||Saturday 8, June |- bgcolor="#FFFFFF" ||| 4.11 (35) |||| 5.5 (35) ||Whitten Oval|| 11,236 ||Saturday 8, June |- bgcolor="#FFFFFF" ||| 14.9 (93) |||| 21.19 (145) ||Carrara Stadium|| 5,728 ||Sunday 9, June |- bgcolor="#FFFFFF" ||| 7.8 (50) |||| 7.5 (47) ||Football Park|| 31,273 ||Sunday 9, June |- bgcolor="#FFFFFF" ||| 13.18 (96) |||| 20.16 (136) ||Princes Park|| 23,123 ||Monday 10, June |- bgcolor="#FFFFFF" ||| 13.12 (90) |||| 14.12 (96) ||MCG|| 29,415 ||Monday 10, June |- bgcolor="#FFFFFF" ||| 15.11 (101) |||| 8.18 (66) ||Moorabbin Oval|| 31,242 ||Monday 10, June
Round 13
Round 14
! Home team ! Home team score ! Away team ! Away team score ! Ground ! Crowd ! Date |- bgcolor="#FFFFFF" ||| 19.14 (128) |||| 26.16 (172) ||MCG|| 23,353 ||Friday 21, June |- bgcolor="#FFFFFF" ||| 12.11 (83) |||| 11.14 (80) ||Princes Park|| 19,588 ||Saturday 22, June |- bgcolor="#FFFFFF" ||| 20.23 (143) |||| 6.8 (44) ||Victoria Park|| 22,332 ||Saturday 22, June |- bgcolor="#FFFFFF" ||| 17.20 (122) |||| 12.11 (83) ||Windy Hill|| 16,519 ||Saturday 22, June |- bgcolor="#FFFFFF" ||| 16.6 (102) |||| 8.21 (69) ||Moorabbin Oval|| 23,963 ||Saturday 22, June |- bgcolor="#FFFFFF" ||| 11.11 (77) |||| 19.13 (127) ||Waverley Park|| 30,664 ||Saturday 22, June |- bgcolor="#FFFFFF" ||| 23.18 (156) |||| 13.12 (90) ||Football Park|| 35,355 ||Sunday 23, June
Round 15
! Home team ! Home team score ! Away team ! Away team score ! Ground ! Crowd ! Date |- bgcolor="#FFFFFF" ||| 18.7 (115) |||| 27.17 (179) ||MCG|| 25,819 ||Friday 28, June |- bgcolor="#FFFFFF" ||| 23.22 (160) |||| 5.7 (37) ||Victoria Park|| 25,164 ||Saturday 29, June |- bgcolor="#FFFFFF" ||| 6.5 (41) |||| 8.12 (60) ||Princes Park|| 15,147 ||Saturday 29, June |- bgcolor="#FFFFFF" ||| 11.23 (89) |||| 6.7 (43) ||Whitten Oval|| 17,536 ||Saturday 29, June |- bgcolor="#FFFFFF" ||| 19.17 (131) |||| 14.14 (98) ||Waverley Park|| 22,688 ||Saturday 29, June |- bgcolor="#FFFFFF" ||| 14.10 (94) |||| 26.21 (177) ||SCG|| 10,569 ||Sunday 30, June |- bgcolor="#FFFFFF" ||| 21.11 (137) |||| 14.9 (93) ||Subiaco|| 42,255 ||Sunday 30, June
Round 16
! Home team ! Home team score ! Away team ! Away team score ! Ground ! Crowd ! Date |- bgcolor="#FFFFFF" ||| 14.5 (89) |||| 13.17 (95) ||Princes Park|| 23,191 ||Saturday 6, July |- bgcolor="#FFFFFF" ||| 20.13 (133) |||| 13.2 (80) ||Victoria Park|| 27,757 ||Saturday 6, July |- bgcolor="#FFFFFF" ||| 23.20 (158) |||| 14.11 (95) ||Waverley Park|| 21,715 ||Saturday 6, July |- bgcolor="#FFFFFF" ||| 11.10 (76) |||| 14.16 (100) ||MCG|| 25,799 ||Saturday 6, July |- bgcolor="#FFFFFF" ||| 13.21 (99) |||| 10.15 (75) ||Kardinia Park|| 31,096 ||Sunday 7, July |- bgcolor="#FFFFFF" ||| 26.14 (170) |||| 15.15 (105) ||Gabba|| 7,373 ||Sunday 7, July |- bgcolor="#FFFFFF" ||| 13.18 (96) |||| 18.16 (124) ||MCG|| 32,782 ||Sunday 7, July
Round 17
! Home team ! Home team score ! Away team ! Away team score ! Ground ! Crowd ! Date |- bgcolor="#FFFFFF" ||| 20.15 (135) |||| 8.6 (54) ||WACA|| 30,715 ||Friday 12, July |- bgcolor="#FFFFFF" ||| 6.12 (48) |||| 7.13 (55) ||Princes Park|| 13,509 ||Saturday 13, July |- bgcolor="#FFFFFF" ||| 6.7 (43) |||| 7.18 (60) ||Windy Hill|| 13,501 ||Saturday 13, July |- bgcolor="#FFFFFF" ||| 12.20 (92) |||| 7.13 (55) ||MCG|| 12,710 ||Saturday 13, July |- bgcolor="#FFFFFF" ||| 9.13 (67) |||| 18.8 (116) ||Moorabbin Oval|| 28,789 ||Saturday 13, July |- bgcolor="#FFFFFF" ||| 15.13 (103) |||| 14.6 (90) ||Waverley Park|| 7,239 ||Saturday 13, July |- bgcolor="#FFFFFF" ||| 14.19 (103) |||| 15.24 (114) ||SCG|| 12,143 ||Sunday 14, July
Round 18
! Home team ! Home team score ! Away team ! Away team score ! Ground ! Crowd ! Date |- bgcolor="#FFFFFF" ||| 15.21 (111) |||| 18.16 (124) ||Princes Park|| 14,129 ||Saturday 20, July |- bgcolor="#FFFFFF" ||| 19.9 (123) |||| 5.19 (49) ||Windy Hill|| 19,322 ||Saturday 20, July |- bgcolor="#FFFFFF" ||| 13.10 (88) |||| 13.16 (94) ||Waverley Park|| 24,731 ||Saturday 20, July |- bgcolor="#FFFFFF" ||| 16.14 (110) |||| 17.9 (111) ||Moorabbin Oval|| 24,950 ||Saturday 20, July |- bgcolor="#FFFFFF" ||| 14.16 (100) |||| 12.21 (93) ||Carrara Stadium|| 9,735 ||Sunday 21, July |- bgcolor="#FFFFFF" ||| 20.16 (136) |||| 10.8 (68) ||Kardinia Park|| 22,145 ||Sunday 21, July |- bgcolor="#FFFFFF" ||| 16.22 (118) |||| 19.8 (122) ||Football Park|| 40,794 ||Sunday 21, July
Round 19
Round 20
Round 21
! Home team ! Home team score ! Away team ! Away team score ! Ground ! Crowd ! Date |- bgcolor="#FFFFFF"