| 6-5 | AG Wharf | Glamorgan v Kent | 2004 | a16108 |
| 6-20 | TE Jesty | Hampshire v Glamorgan | 1975 | a1432 |
| 6-20 | RDB Croft | Glamorgan v Worcestershire | 1994 | a8809 |
| 6-20 | SD Thomas | Glamorgan v Combined Universities | 1995 | a9183 |
| 6-40 | RJ Sidebottom | Yorkshire v Glamorgan | 1998 | a11193 |
| 6-42 | AW Laraman | Middlesex v Glamorgan | 2000 | a12941 |
| 5-13 | JN Gillespie | Glamorgan v Warwickshire | 2008 | a19123 |
| 5-17 | JG Thomas | Glamorgan v Sussex | 1985 | a4520 |
| 5-18 | MWW Selvey | Middlesex v Glamorgan | 1975 | a1549 |
| 5-22 | CP Wood | Hampshire v Glamorgan | 2012 | a22082 |
| 5-29 | WW Davis | Glamorgan v Middlesex | 1984 | a4037 |
| 5-29 | PM Such | Essex v Glamorgan | 1997 | a10693 |
| 5-30 | EAE Baptiste | Kent v Glamorgan | 1985 | a4371 |
| 5-30 | Naved-ul-Hasan | Sussex v Glamorgan | 2006 | a17432 |
| 5-32 | AN Jones | Sussex v Glamorgan | 1985 | a4598 |
| 5-32 | S Monkhouse | Glamorgan v Cheshire | 1987 | a5300 |
| 5-33 | DS Harrison | Glamorgan v Worcestershire | 2005 | a16647 |
| 5-37 | D Williamson | Leicestershire v Glamorgan | 1998 | a11281 |
| 5-38 | JG Thomas | Glamorgan v Yorkshire | 1983 | a3686 |
| 5-39 | AP Davies | Glamorgan v Essex | 2001 | a13654 |
| 5-50 | SM Ervine | Hampshire v Glamorgan | 2005 | a16631 |
| 5-60 | MS Kasprowicz | Essex v Glamorgan | 1994 | a8709 |
| 5-61 | JM Cooke | Glamorgan v Essex | 2021 | a28529 |