Since 1936, Thistle have played in their distinctive red-and-yellow jerseys of varying designs, with hoops, stripes and predominantly yellow tops with red trims having been used, although in 2009 a centenary kit was launched in the original navy-blue style to commemorate 100 years at Firhill.

[5] Since joining the Scottish professional leagues in 1893, Thistle had been an unpredictable side, spending four years in the First Division and five in the Second, winning promotion three times.

On 23 October 1971 Davie McParland's team secured the club's most famous result against Jock Stein's Celtic in the League Cup final at Hampden Park, Glasgow.

Ironically before the match, former BBC sport broadcaster Sam Leitch stated that "In Scotland, it's League Cup final day at Hampden Park, where Celtic meet Partick Thistle, who have no chance.

Although this period of exile ended with promotion in 1992, mounting financial problems, including a debt of over £1.5 million, threatened to put the club out of existence.

Speaking in 2004, Thistle chairman Tom Hughes argued the club did not at the time require a stadium with such a large capacity and building the new stand 'seriously affected [their] competitiveness'.

[18] This change was not enough to revive the team, and Thistle were relegated at the end of the 2003–04 season after Inverness, having won the First Division title, were permitted to groundshare with Aberdeen.

The team managed to maintain a relatively positive away record, however it was months before Thistle finally secured a home win, with them beating Aberdeen 3–1 at Firhill in February 2014.

[41] The 2015–16 Scottish Premiership season saw Thistle secure long-term contracts for many of their key players, including Kris Doolan, Callum Booth, Tomáš Černý and Mustapha Dumbuya.

[45] As a result of Thistle's poor season, a number of players were not offered a new contract by the club including captain Abdul Osman, Callum Booth, Steven Lawless, Mustapha Dumbuya, Paul McGinn and Ryan Scully.

Chairman Jacqui Low said "Put simply, he plans to build a strong defence that allows us to then push forward and play attacking football.

[49] Caldwell performed a large squad overhaul in January including the key signing of Scott McDonald who went on to score 7 goals in 13 games.

[51] Although safe, Caldwell released striker Kris Doolan who ended his decade-long stay at the club after being informed that his contract would not be renewed.

[57] On 21 November, Euromillions winner Colin Weir completed the takeover of Partick Thistle, instead of the consortium led by Chien Lee and Paul Conway.

[60][61] McCall made several changes during the January 2020 transfer window, including bringing in the likes of Brian Graham, Zak Rudden and Darren Brownlie, with veteran striker Kenny Miller among those leaving,[62] but Thistle continued to struggle.

Despite picking up slightly in later weeks, following back to back home defeats to Hamilton Academical and Cove Rangers and a 3–2 defeat to Rangers at Ibrox in the Scottish cup, manager Ian McCall and assistants Alan Archibald and Neil Scally were sacked with Thistle sitting 5th in the Championship table.

[76][77] After the departure of McCall it was announced that former player and club hall of famer Kris Doolan would take over as interim manager with Paul MacDonald as his assistant.

After winning twice away at Ayr United and Dundee and a goalless draw with Arbroath as interim, Doolan was appointed permanent manager of Thistle on 3 March 2023.

[89] For the 2019–20 season, Partick Thistle released their new away kit which featured a Rainbow flag design under the sleeves to show support for the LGBT movement.

[93] On the south side of the stadium there is a grass embankment, known to home fans as "The Bing", which had been open terracing until this was demolished in 2006 due to the stand failing to meet the criteria of Scottish Football Association safety regulations.

[103] Maryhill and Possilpark & Parkhouse, served by trains from Glasgow Queen Street, are the nearest railway stations to Firhill, but are not particularly close; the walk between the two sites takes around 30 minutes.

As of 2014, the club trained at the University of Glasgow's Garscube Sports Complex on the northern periphery of the city (near Bearsden, East Dunbartonshire).

Plans for the new facility were abandoned in December 2019 as the investment money was instead used by Colin Weir to purchase the club and to operate a fan-owned business model.

[106] In preparation for the 2020–21 Scottish League One season, Thistle trained at Burnbrae Stadium in Milngavie, which is the home of rugby union club West of Scotland FC.

[112][113] Although the club competes with neighbours Rangers and Celtic, due to the vast differences in team size and fortunes those rivalries are not reciprocated.

[114] One of the fiercest rivals were Airdrieonians with past violent clashes between fans including Airdrie's Section B group, however this rivalry has faded with time.

[113] Strong rivalries also previously existed with Clydebank due to the geographic proximity and controversial ownership in the past (with plans which almost saw both clubs bankrupt); and also Kilmarnock.

Choruses of "He Wears Number 9", "Rellow Army", "Mary fae Maryhill", "Over Land and Sea", "Forever and Ever", "We've Followed the Thistle for Many a Day" (to the tune of Wild Rover), "Oh Maryhill is wonderful", "We’re a well known Glasgow Football Team", "Super Ian McCall", "We score when we want" and "Gerry Britton is the King of Spain" are commonly heard in the singing section of the home support, in the John Lambie stand.

MacB resumed sponsorship of Partick Thistle in the summer of 2012, and subsequently signed a two-year extension, keeping them as main sponsors until the end of the 2014–15 season.

Partick Thistle's current mascot is a sun-shaped character named Kingsley, and was designed by the Turner Prize-nominated artist David Shrigley.