| 373-7 | Glamorgan v Bedfordshire | Sophia Gardens, Cardiff | 1998 | a11253 |
| 174 | Glamorgan v Buckinghamshire | Shardeloes, Amersham | 1972 | a772 |
| 230-7 | Glamorgan v Cheshire | Sophia Gardens, Cardiff | 1987 | a5299 |
| 171-7 | Glamorgan v Cornwall | Boscawen Park, Truro | 1970 | a293 |
| 299-3 | Glamorgan v Derbyshire | The Incora County Ground, Derby | 2023 | a30114 |
| 333-4 | Glamorgan v Dorset | Dean Park, Bournemouth | 2000 | a12785 |
| 345-2 | Glamorgan v Durham | Feethams Cricket Ground, Darlington | 1991 | a7089 |
| 324-8 | Glamorgan v Essex | The Essex County Ground, Chelmsford | 2016 | a24835 |
| 331-7 | Glamorgan v Gloucestershire | County Ground, Bristol | 2019 | a27347 |
| 334-7 | Glamorgan v Hampshire | The Ageas Bowl, Southampton | 2017 | a25570 |
| 244-6 | Glamorgan v Hertfordshire | St Helen's, Swansea | 1969 | a176 |
| 250-9 | Glamorgan v Ireland | Sophia Gardens, Cardiff | 2006 | a17409 |
| 356-7 | Glamorgan v Kent | St Helen's, Swansea | 2017 | a25576 |
| 328-4 | Glamorgan v Lancashire | Penrhyn Avenue, Rhos-on-Sea, Colwyn Bay | 2011 | a21481 |
| 303-6 | Glamorgan v Leicestershire | St Helen's, Swansea | 2013 | a22798 |
| 344-5 | Glamorgan v Lincolnshire | St Helen's, Swansea | 1994 | a8681 |
| 302-9 | Glamorgan v Middlesex | Sophia Gardens, Cardiff | 2018 | a26424 |
| 202-9 | Glamorgan v Norfolk | County Ground, Lakenham | 1983 | a3734 |
| 343-5 | Glamorgan v Northamptonshire | Sophia Gardens, Cardiff | 2023 | a30169 |
| 278-2 | Glamorgan v Nottinghamshire | The Gnoll, Neath | 2024 | a31013 |
| 322-5 | Glamorgan v Oxfordshire | St Helen's, Swansea | 1993 | a8092 |
| 179 | Glamorgan v Scotland | Myreside, Edinburgh | 1988 | a5721 |
| 301-8 | Glamorgan v Somerset | The Cooper Associates County Ground, Taunton | 2023 | a30162 |
| 318-4 | Glamorgan v Staffordshire | Sophia Gardens, Cardiff | 1989 | a6109 |
| 320-5 | Glamorgan v Suffolk | The Victory Ground, Bury St Edmunds | 2005 | a16612 |
| 429 | Glamorgan v Surrey | The AMP Oval, Kennington | 2002 | a14362 |
| 348-8 | Glamorgan v Sussex | The 1st Central County Ground, Hove | 2019 | a27374 |
| 307 | Glamorgan v Warwickshire | The Gnoll, Neath | 2023 | a30124 |
| 356-3 | Glamorgan v Worcestershire | County Ground, New Road, Worcester | 2022 | a29419 |
| 285-7 | Glamorgan v Yorkshire | Penrhyn Avenue, Rhos-on-Sea, Colwyn Bay | 2013 | a22601 |
| 246-6 | Glamorgan v Zimbabwe | Harare Sports Club, Harare | 1990/91 | a6967 |
| 314-2 | Glamorgan v British Universities | FP Fenner's Ground, Cambridge | 1996 | a9803 |
| 318-3 | Glamorgan v Combined Universities | Sophia Gardens, Cardiff | 1995 | a9182 |
| 312-9 | Glamorgan v Durham Cricket Board | Feethams Cricket Ground, Darlington | 2003 | a15094 |
| 245-8 | Glamorgan v Hampshire Cricket Board | County Ground, Southampton | 1999 | a12002 |
| 233-7 | Glamorgan v Minor Counties | County Ground, Trowbridge | 1991 | a6981 |
| 180-5 | Glamorgan v Minor Counties South | Hardenhuish Park, Chippenham | 1972 | a654 |
| 109-7 | Glamorgan v Minor Counties West | Shardeloes, Amersham | 1977 | a1876 |
| 204 | Glamorgan v Pakistan A | Spytty Park, Newport | 2016 | a24818 |
| 0-0 | Glamorgan v Pakistanis | St Helen's, Swansea | 1982 | a3374 |
| 168 | Glamorgan v Sri Lanka A | Sophia Gardens, Cardiff | 2004 | a15980 |
| 300-6 | Glamorgan v Unicorns | Garon Park, Southend-on-Sea | 2013 | a22674 |
| 239-5 | Glamorgan v West Indians | St Helen's, Swansea | 1973 | a980 |
| 328-6 | Glamorgan v West Indies A | Eugene Cross Park, Ebbw Vale | 2006 | a17556 |
| 221-8 | Glamorgan v Zimbabweans | Christ College, Brecon | 1993 | a8207 |