The 1991 Ottawa Rough Riders finished third place in the East Division with a 7–11 record. They were defeated in the East Semi-Final by the Winnipeg Blue Bombers.
| Week
|
Game
|
Date
|
Opponent
|
Results
|
Venue
|
Attendance
|
| Score
|
Record
|
| 1
|
1
|
Thu, July 11
|
vs. Toronto Argonauts
|
L 18–35
|
0–1
|
Lansdowne Park
|
23,254
|
| 2
|
2
|
Wed, July 17
|
at Edmonton Eskimos
|
L 33–40
|
0–2
|
Commonwealth Stadium
|
35,511
|
| 3
|
3
|
Wed, July 24
|
vs. Calgary Stampeders
|
L 28–42
|
0–3
|
Lansdowne Park
|
18,788
|
| 4
|
4
|
Fri, Aug 2
|
at Winnipeg Blue Bombers
|
L 19–26
|
0–4
|
Winnipeg Stadium
|
24,743
|
| 5
|
5
|
Thu, Aug 8
|
vs. Winnipeg Blue Bombers
|
W 41–31
|
1–4
|
Lansdowne Park
|
23,414
|
| 6
|
6
|
Thu, Aug 15
|
vs. Edmonton Eskimos
|
W 36–35
|
2–4
|
Lansdowne Park
|
25,884
|
| 7
|
7
|
Sat, Aug 24
|
at Hamilton Tiger-Cats
|
W 24–19
|
3–4
|
Ivor Wynne Stadium
|
11,027
|
| 8
|
8
|
Thu, Aug 29
|
vs. Hamilton Tiger-Cats
|
W 38–14
|
4–4
|
Lansdowne Park
|
24,532
|
| 9
|
9
|
Wed, Sept 4
|
at BC Lions
|
L 20–24
|
4–5
|
BC Place
|
28,107
|
| 9
|
10
|
Sun, Sept 8
|
vs. BC Lions
|
L 29–56
|
4–6
|
Lansdowne Park
|
24,171
|
| 10
|
11
|
Sat, Sept 14
|
at Hamilton Tiger-Cats
|
W 33–26
|
5–6
|
Ivor Wynne Stadium
|
10,402
|
| 11
|
12
|
Sun, Sept 22
|
at Winnipeg Blue Bombers
|
L 8–40
|
5–7
|
Winnipeg Stadium
|
32,675
|
| 12
|
13
|
Sun, Sept 29
|
vs. Toronto Argonauts
|
L 24–25
|
5–8
|
Lansdowne Park
|
26,172
|
| 13
|
14
|
Sun, Oct 6
|
vs. Saskatchewan Roughriders
|
W 42–25
|
6–8
|
Lansdowne Park
|
22,038
|
| 14
|
15
|
Sun, Oct 13
|
at Calgary Stampeders
|
L 24–44
|
6–9
|
McMahon Stadium
|
18,761
|
| 15
|
16
|
Sun, Oct 20
|
at Saskatchewan Roughriders
|
L 28–41
|
6–10
|
Taylor Field
|
19,478
|
| 16
|
17
|
Sat, Oct 26
|
vs. Winnipeg Blue Bombers
|
W 46–20
|
7–10
|
Lansdowne Park
|
23,060
|
| 17
|
18
|
Sun, Nov 3
|
at Toronto Argonauts
|
L 31–34
|
7–11
|
SkyDome
|
36,001
|
[2]
