| 1 | 176* | A Jones & JA Hopkins | Glamorgan v Minor Counties | 1980 | a2635 |
| 2 | 204 | SP James & A Dale | Glamorgan v Lincolnshire | 1994 | a8681 |
| 3 | 212 | WD Bragg & CA Ingram | Glamorgan v Kent | 2017 | a25576 |
| 4 | 178 | JJ Whitaker & P Willey | Leicestershire v Glamorgan | 1984 | a4093 |
| 5 | 133 | NJ O'Brien & MA Thornely | Leicestershire v Glamorgan | 2013 | a22798 |
| 6 | 131 | N Pothas & AD Mascarenhas | Hampshire v Glamorgan | 2007 | a18248 |
| 7 | 102 | EW Jones & MA Nash | Glamorgan v Hampshire | 1976 | a1644 |
| 8 | 88 | BA Davis & MA Nash | Glamorgan v Kent | 1970 | a303 |
| 9 | 87 | Glamorgan v Lincolnshire | 1974 | a1200 | |
| 10 | 41 | JW Solanky & DL Williams | Glamorgan v Kent | 1973 | a1013 |
| 10 | 41 | WD Bragg & AJ Davies | Wales Minor Counties v Nottinghamshire | 2005 | a16613 |