| As of 7 January 1991 |
| Rk |
Name |
Nation |
Points |
| 1 |
Stefan Edberg |
SWE |
3889 |
| 2 |
Boris Becker |
GER |
3528 |
| 3 |
Ivan Lendl |
TCH |
2581 |
| 4 |
Andre Agassi |
USA |
2398 |
| 5 |
Pete Sampras |
USA |
1888 |
| 6 |
Andrés Gómez |
ECU |
1680 |
| 7 |
Thomas Muster |
AUT |
1551 |
| 8 |
Goran Ivanišević |
YUG |
1514 |
| 9 |
Emilio Sánchez |
ESP |
1487 |
| 10 |
Brad Gilbert |
USA |
1451 |
| 11 |
Jonas Svensson |
SWE |
1365 |
| 12 |
Andrei Chesnokov |
URS |
1353 |
| 13 |
John McEnroe |
USA |
1210 |
| 14 |
Guillermo Pérez-Roldán |
ARG |
1190 |
| 15 |
Michael Chang |
USA |
1119 |
| 16 |
Guy Forget |
FRA |
1101 |
| 17 |
Jakob Hlasek |
SUI |
1089 |
| 18 |
Jay Berger |
USA |
1066 |
| 19 |
Juan Aguilera |
ESP |
1042 |
| 20 |
Aaron Krickstein |
USA |
1025 |
|
| Year-end rankings (23 December 1991) |
| Rk |
Name |
Nation |
Points |
High |
Low |
Change |
| 1 |
Stefan Edberg |
SWE |
3515 |
1 |
2 |
= |
| 2 |
Jim Courier |
USA |
3205 |
2 |
26 |
+21 |
| 3 |
Boris Becker |
GER |
2822 |
1 |
3 |
−1 |
| 4 |
Michael Stich |
GER |
2675 |
3 |
38 |
+34 |
| 5 |
Ivan Lendl |
TCH |
2565 |
3 |
5 |
−2 |
| 6 |
Pete Sampras |
USA |
2492 |
5 |
9 |
−1 |
| 7 |
Guy Forget |
FRA |
2392 |
4 |
16 |
+9 |
| 8 |
Karel Nováček |
TCH |
1599 |
8 |
35 |
+27 |
| 9 |
Petr Korda |
TCH |
1570 |
9 |
87 |
+30 |
| 10 |
Andre Agassi |
USA |
1519 |
4 |
10 |
−6 |
| 11 |
Sergi Bruguera |
ESP |
1504 |
5 |
31 |
+20 |
| 12 |
Magnus Gustafsson |
SWE |
1462 |
10 |
39 |
+20 |
| 13 |
Derrick Rostagno |
USA |
1392 |
13 |
49 |
+36 |
| 14 |
Emilio Sánchez |
ESP |
1388 |
8 |
16 |
−5 |
| 15 |
Michael Chang |
USA |
1363 |
9 |
28 |
= |
| 16 |
Goran Ivanišević |
CRO |
1355 |
7 |
19 |
−8 |
| 17 |
David Wheaton |
USA |
1289 |
12 |
46 |
+9 |
| 18 |
Goran Prpić |
CRO |
1178 |
16 |
57 |
+39 |
| 19 |
Brad Gilbert |
USA |
1129 |
7 |
25 |
−9 |
| 20 |
Jakob Hlasek |
SUI |
1109 |
14 |
22 |
−3 |
|