| 1 | 330 | A Jones & RC Fredericks | Glamorgan v Northamptonshire | 1972 | f29315 |
| 2 | 301 | PJ Sharpe & DEV Padgett | Yorkshire v Glamorgan | 1971 | f28842 |
| 3 | 291 | BA Godleman & TC Lace | Derbyshire v Glamorgan | 2019 | f59510 |
| 4 | 289 | Usman Khawaja & KS Carlson | Glamorgan v Derbyshire | 2018 | f58712 |
| 5 | 335 | BF Butcher & CH Lloyd | West Indians v Glamorgan | 1969 | f27800 |
| 6 | 276 | M Leyland & E Robinson | Yorkshire v Glamorgan | 1926 | f11773 |
| 7 | 211 | PA Cottey & OD Gibson | Glamorgan v Leicestershire | 1996 | f42530 |
| 8 | 166 | G Richards & MA Nash | Glamorgan v Leicestershire | 1978 | f32077 |
| 9 | 203* | JJ Hills & JC Clay | Glamorgan v Worcestershire | 1929 | f12829 |
| 10 | 143 | T Davies & SAB Daniels | Glamorgan v Gloucestershire | 1982 | f34077 |