| 1 | 213 | MD Moxon & AA Metcalfe | Yorkshire v Glamorgan | 1991 | a7021 |
| 2 | 184 | NJ Dexter & AJ Hall | Kent v Glamorgan | 2006 | a17478 |
| 3 | 191 | AI Gait & CWG Bassano | Derbyshire v Glamorgan | 2003 | a15135 |
| 4 | 169* | MTG Elliott & MP Maynard | Glamorgan v Northamptonshire | 2004 | a15864 |
| 5 | 224 | Shakib Al Hasan & Mahmudullah | Bangladesh v New Zealand | 2017 | a25656 |
| 6 | 186 | CA Ingram & TN Cullen | Glamorgan v Kent | 2022 | a29320 |
| 7 | 124 | Mohammad Yousuf & Rashid Latif | Pakistan v Australia | 2001 | a13521 |
| 8 | 113* | WT Root & M de Lange | Glamorgan v Surrey | 2019 | a27339 |
| 9 | 84* | NJ Dexter & ST Finn | Middlesex v Glamorgan | 2014 | a23421 |
| 10 | 57 | LJ Carey & T van der Gugten | Glamorgan v Somerset | 2019 | a27296 |