| 1 | 106 | DS Smith & LMP Simmons | West Indies A v Glamorgan | 2006 | a17554 |
| 2 | 160 | DS Smith & RS Morton | West Indies A v Glamorgan | 2006 | a17554 |
| 3 | 147 | Younis Ahmed & Javed Miandad | Glamorgan v Derbyshire | 1984 | a4148 |
| 4 | 90 | RDV Knight & GRJ Roope | Surrey v Glamorgan | 1979 | a2452 |
| 5 | 71 | P Johnson & DW Randall | Nottinghamshire v Glamorgan | 1987 | a5282 |
| 6 | 57 | PA Neale & DN Patel | Worcestershire v Glamorgan | 1976 | a1665 |
| 7 | 84 | PA Cottey & CP Metson | Glamorgan v Hampshire | 1991 | a7155 |
| 8 | 35 | RJ Maru & SD Udal | Hampshire v Glamorgan | 1991 | a7155 |
| 9 | 35 | EW Jones & EA Moseley | Glamorgan v Sussex | 1981 | a3058 |
| 10 | 25* | RE East & JK Lever | Essex v Glamorgan | 1973 | a917 |