Glenavon was the first provincial club to win the
Irish League title (1951–52) and also the first provincial club to do the league and cup double (1956–57). The latter triumph also made them the first Northern Irish team to enter the
European Cup. Glenavon has had a number of famous players, none more so than
Wilbur Cush and
Jimmy Jones, who were to the fore in "the glory years" of the Fifties. The success of the 1950s is still the benchmark at the club – the closest the club have come to achieving a league success since came in the 1993–94 season, when but for two late goals in the final match Glenavon would have been crowned champions. Glenavon enjoyed a good run throughout the 1990s, consistently achieving good placings in the league and winning several cup competitions, including Irish Cup wins in
1991–92 and
1996–97, and were runners-up against Glentoran in the
1995–96 and
1997–98 editions of the cup. The club then suffered a relatively poor spell during the early 2000s, which culminated in relegation to
the second tier in the
2003–04 Irish League season. Although they were promoted the following season, Glenavon continued to struggle towards the bottom of the league throughout the remainder of the decade, going through several managers such as
Terry Cochrane,
Stephen McBride &
Marty Quinn. McBride was a
Northern Ireland international and a popular Glenavon player in the 1980s & 1990s, but his reign lasted just seven months before he was relieved of his managerial duties with Glenavon at the bottom of the IFA Premiership. Former
Portadown &
Glentoran forward
Gary Hamilton was appointed player-manager in December 2011, managing to steer the club from relegation in the remainder of the
2011–12 Irish League season. This was followed up by a 9th-place finish in the
2012–13 season. The
2013–14 season was welcomed by many as a successful season, the Lurgan club securing a top-six league finish and a return to winning major silverware with the
2013–14 Irish Cup, in which Glenavon triumphed 2–1 over
Ballymena United in the final. Following on from this cup triumph was a successful
2014–15 season. Though Glenavon did not fare as well in the Irish Cup, exiting at the 6th round to Championship 1 side
Harland & Wolff Welders, an excellent late run of 7 consecutive wins saw the Lurgan Blues pip their Mid-Ulster rivals
Portadown to a third-placed league finish, therefore sealing European football for the 2015–16 season. The
2015–16 season would be another good season for the Lurgan Blues, once again securing Europe on the penultimate matchday by finishing third, on a points total of 69. Even more success was to follow, as the club claimed a second Irish Cup win in three years, defeating
David Healy's
Linfield 2–0 in the final. Glenavon did not enjoy similar success in the
2016–17 season. Despite having signed former
Celtic and
Northern Ireland winger
Paddy McCourt, the club struggled for form and could only achieve a disappointing 6th-placed finish in the league. Although the club reached the semi-finals of the
Mid-Ulster Cup,
League Cup and
Irish Cup, they were defeated in all by
Warrenpoint Town,
Carrick Rangers and
Coleraine respectively. Glenavon also suffered agonising defeat to
Ballymena United in the Europa League playoff final, therefore missing out on a fourth successive year of European qualification. Despite failure to qualify for Europe and a large exodus of players at the start of the
2017–18 season, the signing of players such as
Sammy Clingan and Andrew Mitchell, aligned with the emergence of
Bobby Burns, meant that Glenavon had a resurgence in form, finishing third once again, and qualifying for Europe. However, the only piece of silverware attained was the
Mid-Ulster Cup, having exited the League Cup and Irish Cup via shock defeats at the hands of
Ards and
Loughgall. While the
2018–19 season yielded a club-record points total of 70, the club had a disappointing record in the major cups, falling to defeat against
Dergview and
Dungannon Swifts in the
League Cup and
Irish Cup respectively. However, the Lurgan Blues did retain the Mid-Ulster Cup with a 4–3 victory over
Warrenpoint Town. Despite attaining another third-place finish, Glenavon fell to a 2–4 defeat against
Glentoran in the Europa League playoff semi-final and failed to attain European qualification for the following season. The club endured a difficult
2019–20 campaign, falling to several heavy defeats in the league and exiting the Irish Cup at the 5th round with a 2–0 defeat against
Coleraine. Inconsistent form meant that the club finished outside of the league's top-six for the first time since the
2012–13 season. The Lurgan Blues' form improved significantly in the
2020–21 season, but the club narrowly missed out on a top-six finish; their final points total of 62 was the highest points tally recorded for a team in the bottom-six. Their seventh-place finish secured the Lurgan Blues a spot in the
Europa Conference League playoffs. They faced
Larne in the semi-final, losing narrowly to a
Martin Donnelly goal in injury time, leaving Glenavon without European qualification. The
2021–22 season saw the unexpected departure of the previous season's top scorer, Danny Purkis, but Glenavon would once again claim a seventh-place finish and qualification for the
Europa Conference League playoffs. They were defeated at the semi-final stage, losing 2–0 against third-placed
Glentoran at
The Oval. The same opposition had eliminated Glenavon in the
Irish League Cup earlier in the season. The Lurgan Blues exited the
Irish Cup in controversial fashion, having had two goals disallowed against
Crusaders. On 13 September 2023, it was announced that Gary Hamilton had vacated the post of manager, following a number of poor results at the beginning of the
2023–24 season. U20s manager Gary McAlister took over as caretaker for matches against
Carrick Rangers and
Crusaders, and on 25 September, former
Warrenpoint Town manager Stephen McDonnell was appointed in the role on a permanent basis. McDonnell steadied the ship at Glenavon and they ultimately avoided relegation from the
NIFL Premiership that season, finishing 10th. Though McDonnell staved off the threat of relegation in
2023–24, he was relieved of his duties as manager on 17 November 2024, after a poor start to the
2024–25 season. He was replaced in the role by former
Institute and
Cliftonville manager
Paddy McLaughlin. Glenavon's form notably improved from December to February, with the prospect of a top-six finish becoming a possibility, but a poor ending to that season meant that Glenavon again finished 10th. In spite of making several notable signings during the summer of 2025, including
Stephen Mallon,
Kyle McClelland and
Francely Lomboto, Glenavon had a dismal start to the
2025–26 season, and McLaughlin departed the club on 28 September 2025 with the club having lost their opening nine league fixtures. Former Glenavon midfielder and ex-
Northern Ireland international
Michael O'Connor became manager of the club on 11 October 2025. The Lurgan Blues' form improved under O'Connor, but a 1-0 defeat to Crusaders on 18 April 2026 confirmed the club's relegation to the
NIFL Championship after a 21-year spell in the top-flight. ==Stadium==