BG Pathum United

Origins of the club and early history (1979–2008)

Bangkok Glass Football Club traces its origins to 1979, following the establishment of the Bangkok Glass Factory. Initially, the team was formed for internal matches among factory employees. In 1989, the club began participating in external competitions, particularly tournaments among industrial factories in Pathum Thani province, where it gradually gained wider local recognition.

In 1999, the employees and management formally organized the team into a more structured football club. After improving its facilities, equipment, and stadium, Bangkok Glass Football Club was officially founded in April 2006. Player recruitment began the following month, and the club registered as a member of the Football Association of Thailand later that year.

The club’s first official competition was the Ngor Royal Cup in the 2007–08 season, where Bangkok Glass finished as runners-up, losing 1–0 to Khukhot Municipal in the final. This performance earned the club promotion to compete in the higher-tier King’s Cup the following year.

In 2008, BGFC Sport Company Limited was established to professionally manage the club in accordance with AFC regulations. That same period, the team competed in the 2008–09 Khor Royal Cup and reached the final, where they were defeated 2–1 by JW Group. Nevertheless, the club secured promotion to the Khǒr Royal Cup. In addition to football, Bangkok Glass also operated a futsal team, which competed in the Futsal Thailand League.

Takeover of "Krung Thai Bank" and first year in the top flight (2009)

In January 2009, Krung Thai Bank, a club from the Thailand Premier League, announced its dissolution after failing to meet the Asian Football Confederation (AFC) requirement to register as a juristic entity. As a result, Bangkok Glass, then competing in the Football B (Khor B) Royal Cup, took over the league position and assets of Krung Thai Bank and entered the Thai Premier League in its place.

During this transition period, Bangkok Glass temporarily used Queen Sirikit's 60th Anniversary Stadium as their home ground while the club home ground, the Leo Stadium was undergoing renovation. In their debut top-flight season in the 2009 season, the club performed strongly, finishing third in the Thai Premier League. Meanwhile, the original team formed by the company’s employees and management in 1999 continued to compete separately under the name Rangsit.

The club's growth (2010–2016)

In 2010, Bangkok Glass was highly popular and Leo Stadium was completed after a major renovation, they returned to play on this field again after updating for almost 1 year. in January, Bangkok Glass sent the team to compete in the Queen's Cup and won the championship by defeating Police United 4–1. In that same year, they sent the team to compete in Singapore Cup, in the second year, they succeed by winning the 2010 Singapore Cup.

Head coach Supasin Leelarit and Surachai Jaturapattarapong was re-appointed as head coach at the end of the 2011 season. After a disappointing season, Surachai stepped down again from his post October 2012 and was replaced by Englishmen Phil Stubbins as head coach. The club finished the season a disappointing 8th place in the 2012 season. Phil Stubbins stepped down in March 2013 after a disappointing season where he was replaced by a caretaker coach Anurak Srikerd.

Bangkok Glass than announced its new head coach for midway of the 2013 Thai Premier League, Attaphol Buspakom, one of Thailand's most respected and successful coaches with an AFC Champions League runners-up in 2003 with BEC Tero Sasana and two Thai League 1 titles with Muangthong United in 2009 and Buriram United in 2011. Attaphol completely changed the club football philosophy from a very direct long balls, style of play to more possession, more short passes. The team became runners-up in the 2013 Thai FA cup for the first time of club history, defeated by Buriram United 3–1 at Thammasat Stadium in the final and finishing fifth in the league. With Attaphol Buspakom, his time at the club ended when his team were defeated 1–2 by Port midway of the 2014 season, when he resigned and was replace by Anurak Srikerd.

First major honours

In 2014, assistant coach Anurak Srikerd was promoted to head coach where he went on to win the 2014 Thai FA Cup where Lazarus Kaimbi scored the only goal in the final to secure the club first ever major honours in history.

Australian Aurelio Vidmar became the eleventh permanent head coach of Bangkok Glass when his tenure was officially announced on 1 August 2016. He than guided Bangkok Glass to play modern possession football philosophy and challenging for the top 3 spot for a short period in the 2016 season, their best finish since 2009.

In 2015, Bangkok Glass handed Buriram United their only 2017 league defeat on 3 May. The team managed to end their season by finishing fifth in the Thai League 1 with injuries at different times to key player of club – Thailand national team winger Sarawut Masuk, Ariel Rodriguez, Daniel Toti and the team's captain Matt Smith. With Vidmar, his time at the club ended when his team won Navy 3–0, in the Thai League 2017 matchday 22. The team was giving a farewell party for Vidmar and took care of him feels like family.

Relegation, comeback, and route to first Thai League 1 Title (2017–2021)

In November 2017, Bangkok Glass appointed Spanish Josep Ferré as the club's head coach.

In 2018, Bangkok Glass changed the symbol and the color of the new club and improved the Leo Stadiums fields by using real grass. In March, The Rabbits were in danger of relegation,

In the last match of the Thai League season 2018, the association announced that there would be 5 relegated teams. Bangkok Glass lost to Nakhon Ratchasima Mazda while the other two teams hoped to escape from the relegation, such as Sukhothai and Chainat Hornbill but they won. Resulting in Chainat Hornbill and Bangkok Glass having the same score of 42 points but Chainat Hornbill had better stats making Bangkok Glass became the last team to be relegated by being ranked 14th caused to relegation to kick in the Thai League 2 seasons later. It is the first time of the club has been in the past 10 years since the acquisition of Krung Thai Bank Club in 2009.