P: 39 W: 12 D: 14 L: 13
Previously: Bridgend Town; Penybont FC
Last meeting: 01 Jan 2026 — Llanelli v Penybont (0-1)
| Season | Date | Match | Result | Score | Competition |
|---|---|---|---|---|---|
| 1967-68 | 25 Nov 1967 | Bridgend Town v Llanelli | D | 2-2 | WA 4R |
| 1967-68 | 02 Dec 1967 | Llanelli v Bridgend Town | L | 1-2 | WA 4RRE |
| 1967-68 | 10 Feb 1968 | Llanelli v Bridgend Town | L | 1-3 | LEAGUE |
| 1967-68 | 23 Mar 1968 | Bridgend Town v Llanelli | L | 0-3 | LEAGUE |
| 1968-69 | Llanelli v Bridgend Town | LEAGUE | |||
| 1968-69 | Bridgend Town v Llanelli | LEAGUE | |||
| 1968-69 | 01 Feb 1969 | Bridgend Town v Llanelli | L | 0-4 | WELSH C 4R |
| 1969-70 | Llanelli v Bridgend Town | LEAGUE | |||
| 1969-70 | 07 Mar 1970 | Bridgend Town v Llanelli | L | 1-3 | LEAGUE |
| 1971-72 | 18 Mar 1972 | Bridgend Town v Llanelli | W | 1-0 | LEAGUE |
| 1971-72 | 17 Apr 1972 | Llanelli v Bridgend Town | W | 3-1 | LEAGUE |
| 1980-81 | 29 Nov 1980 | Llanelli v Bridgend Town | D | 1-1 | LEAGUE |
| 1980-81 | 30 Apr 1981 | Bridgend Town v Llanelli | W | 1-0 | LEAGUE |
| 1981-82 | 26 Sep 1981 | Bridgend Town v Llanelli | D | 2-2 | LEAGUE |
| 1981-82 | 06 Feb 1982 | Llanelli v Bridgend Town | D | 1-1 | LEAGUE |
| 1983-84 | 14 Mar 1984 | Bridgend Town v Llanelli | D | 0-0 | LEAGUE |
| 1983-84 | 31 Mar 1984 | Llanelli v Bridgend Town | W | 2-1 | LEAGUE |
| 1984-85 | Llanelli v Bridgend Town | L | 2-5 | LEAGUE | |
| 1984-85 | 18 Aug 1984 | Bridgend Town v Llanelli | D | 0-0 | LEAGUE |
| 1985-86 | 07 Sep 1985 | Bridgend Town v Llanelli | D | 2-2 | LEAGUE |
| 1985-86 | 26 Apr 1986 | Llanelli v Bridgend Town | D | 2-2 | LEAGUE |
| 1986-87 | 29 Nov 1986 | Bridgend Town v Llanelli | L | 1-2 | LEAGUE |
| 1986-87 | 28 Mar 1987 | Llanelli v Bridgend Town | W | 1-0 | LEAGUE |
| 1987-88 | 26 Sep 1987 | Llanelli v Bridgend Town | W | 3-0 | LEAGUE |
| 1987-88 | 20 Apr 1988 | Bridgend Town v Llanelli | W | 3-1 | LEAGUE |
| 1989-90 | 26 Feb 1990 | Llanelli v Bridgend Town | L | 0-1 | LEAGUE |
| 1989-90 | 14 Apr 1990 | Bridgend Town v Llanelli | D | 0-0 | LEAGUE |
| 1990-91 | 26 Mar 1991 | Bridgend Town v Llanelli | L | 0-2 | LEAGUE |
| 1990-91 | 13 Apr 1991 | Llanelli v Bridgend Town | L | 1-4 | LEAGUE |
| 1991-92 | 07 Dec 1991 | Bridgend Town v Llanelli | D | 2-2 | LEAGUE |
| 1991-92 | 21 Mar 1992 | Llanelli v Bridgend Town | D | 3-3 | LEAGUE |
| 1997-98 | 08 Nov 1997 | Llanelli v Bridgend Town | W | 2-0 | LEAGUE |
| 1997-98 | 14 Mar 1998 | Bridgend Town v Llanelli | W | 2-1 | LEAGUE |
| 1998-99 | 03 Oct 1998 | Bridgend Town v Llanelli | L | 1-2 | LEAGUE |
| 1998-99 | 10 Mar 1999 | Llanelli v Bridgend Town | D | 1-1 | LEAGUE |
| 2003-04 | 14 Jan 2004 | Llanelli v Bridgend Town | W | 3-1 | LEAGUE |
| 2003-04 | 20 Mar 2004 | Bridgend Town v Llanelli | D | 1-1 | LEAGUE |
| 2017-18 | 04 Sep 2017 | Penybont v Llanelli | W | 4-0 | LEAGUE |
| 2017-18 | 07 Mar 2018 | Llanelli v Penybont | W | 1-0 | LEAGUE |
| 2023-24 | 10 Nov 2023 | Llanelli v Penybont | D | 3-3 | WELSH CUP 3R |
| 2025-26 | 25 Aug 2025 | Penybont v Llanelli | L | 0-2 | LEAGUE |
| 2025-26 | 01 Jan 2026 | Llanelli v Penybont | L | 0-1 | LEAGUE |