This is a list of Glamorgan first-class cricket records; that is, record team and individual performances in first-class cricket for Glamorgan. Records for Glamorgan in List A cricket, the shorter form of the game, are found at List of Glamorgan List A cricket records.
| Total Runs | Opponents | Venue | Season | |
|---|---|---|---|---|
| Highest for Glamorgan | 795-5 d | v Leicestershire | Leicester | 2022 |
| Highest against Glamorgan | 712 | by Northamptonshire | Northampton | 1998 |
| Lowest for Glamorgan | 22 | v Lancashire | Liverpool | 1924 |
| Lowest against Glamorgan | 33 | by Leicestershire | Ebbw Vale | 1965 |
| Source: CricketArchive. Last updated: 23 May 2007. | ||||
| Runs | Batsman | Opponents | Venue | Season | |
|---|---|---|---|---|---|
| Highest individual innings | 410* |  Sam Northeast |
v Leicestershire | Leicester | 2022 |
| Most runs in a season for Glamorgan | 2,276 | Hugh Morris |
1990 | ||
| Most runs in a career for Glamorgan | 34,056 | Alan Jones |
1957–1983 | ||
| Source: CricketArchive. Last updated: 23 May 2007. | |||||
| Analysis | Bowler | Opponents | Venue | Season | |
|---|---|---|---|---|---|
| Best innings analysis for Glamorgan | 10/51 | Jack Mercer |
v Worcestershire | Worcester | 1936 |
| Best match analysis for Glamorgan | 17/212 | Johnnie Clay |
v Worcestershire | Swansea | 1937 |
| Wickets | Bowler | Season | |||
| Most wickets in a season for Glamorgan | 176 | Johnnie Clay |
1937 | ||
| Most career wickets for Glamorgan | 2,174 |  Don Shepherd |
1950–1972 | ||
| Source: CricketArchive. Last updated: 23 May 2007. | |||||
| Wicket Partnership |
Runs | Batsmen | Opponents | Venue | Season |
|---|---|---|---|---|---|
| 1st | 374 |  Matthew Elliott Steve James |
v Sussex | Colwyn Bay | 2000` |
| 2nd | 328 |  Eddie Byrom Colin Ingram |
v Sussex | Cardiff | 2022 |
| 3rd | 313 | Emrys Davies Willie Jones |
v Essex | Brentwood | 1948 |
| 4th | 425* | Adrian Dale Viv Richards |
v Middlesex | Cardiff | 1993 |
| 5th | 307* | Kiran Carlson Chris Cooke |
v Northamptonshire | Cardiff | 2021 |
| 6th | 461* | Sam Northeast Chris Cooke |
v Leicestershire | Leicester | 2022 |
| 7th | 211 | Tony Cottey Ottis Gibson |
v Leicestershire | Swansea | 1996 |
| 8th | 211 | Chris Cooke Michael Neser |
v Leicestershire | Leicester | 2023 |
| 9th | 203* | Joe Hills Johnnie Clay |
v Worcestershire | Swansea | 1929 |
| 10th | 143 | Terry Davies Simon Daniels |
v Gloucestershire | Swansea | 1982 |
| Source: https://stats.espncricinfo.com/zimbabwe/engine/records/fow/highest_partnerships_by_wicket.html?class=4;id=1080;type=team. Last updated: 22 September 2021 | |||||