I think the oldest club that still exist and active in Asia is Mohun Bagan. In Indonesia, the oldest club was actually founded during the Dutch Indies era, it was Gymnastiek Vereeniging from Medan, North Sumatra. The club was founded in 16 November 1887. I think this club is now defunct. as for the oldest club in Indonesia that are now still exist and active, I will divided into 2 , a club that still active but didn't go Pro, and the one who did go Pro. Union Makes Strength club, this club was founded in 15 December 1905. The club previous name was Tiong Hoa Hwee Koan Scholar Footbal Club. The club is still exist until now but they do not turn pro. PSM Makassar, This club is one of the biggest and most known club in Indonesia. The club was founded in 2 November 1915. The club was founded under the name of "Makassar Voetbal Bond (MVB)" PSM Makassar is still exist and active until now, and they are currently in Indonesia Top Flight Division., liga 1.
Hong Kong Football Club was founded by the British colonial official Sir James Stewart Lockhart in 1886. The club played their first ever football match on 16 March 1886. They are currently existing in the top division of Hong Kong league as a semi-pro/amateur team.
Mohun Bagan's rivals East Bengal was formed in 1920 and are still very actice in the top division . Football is the no.1 sport in some states in India like Goa,Kerala,West Bengal and north east states . We had a good team till the 70`s. Then in 1983 we won the cricket world cup and it all went down hill for football and other sports. But i think the scenario is changing .
The Manila Nomads Sports Club, or simply the Nomads Sports Club or the Manila Nomads, is a sports club based in Parañaque, Metro Manila, Philippines. The sports club primarily focuses on its association football team which played in the United Football League, formerly the highest level of Philippine club football. In 2011, the Nomads football team won the UFL Division 2 title after being runner-up in 2010. The club, which was formed in 1914, holds the distinction of being the oldest active football club in the Philippines. However it is not playing in the inaugural season of the new top tier league, Philippines Football League but might do so in the future and last played at the Division 2 level in the UFL. There was supposed to be some amateur clubs formed before the 1900's but their names was lost to recorded history. Around the turn of the 19th century and the beginning of the 20th, 6 clubs were officially formed among them the Manila Sporting Club, the Paris Club, and the Manila Jockey Club. The Manila Jockey Club still exists today, but is mostly involved in horse racing nowadays although they apparently have plans of reviving their football club. In 1906, the Sandow Football Club was formed and won the first official football match in the Philippines in 1907 in celebration of the opening of the Philippine assembly. In 1910, the Bohemian Sporting Club was formed, and won the most Philippine club championships in the first half of the 20th century. Among its players was Filipino born Paulino Alcantara, who eventually became FC Barcelona's first superstar and held the record for most number of goals for the famed La Liga Club for nearly a century until Messi broke it a couple of years ago. Alcantara still holds the record for the youngest player to score a goal for FC Barcelona at 15 y/o. He helped the Bohemian Sporting Club won 2 Philippine club championships before returning to Spain to play for FC Barcelona. Many other Filipino football players from that era played in Spain for such teams as FC Barcelona, Real Madrid, Atletico de Bilbao, Atletico Madrid, etc. all the way to the 1940's, football being the preminent sport in the Philippines in the first half of the 20th century.
The Philippines had the same problems. They had so much success internationally in basketball, regularly representing Asia in world tournaments and fnishing as high as 3rd in the 1954 World Basketball Championships, that people lost interest in football. Fortunately there has been a resurgence of interest since 2010 and football is slowly making a comeback.
Oldest existing Australian club is Balgownie Rangers (1883), who currently play in my local areas first division, which is a long way from the top of the pyramid.
The logo of the the Bohemian Sporting Club, the most successful football club in the Philippines in the first half of the 20th century: Philippines Championship Winners: 1912, 1913, 1915, 1916, 1917, 1918, 1920, 1921, 1922, 1927 Invitations given to patrons to attend BSC matches. It was written in Spanish which was still the most common language spoken in Manila in the early 20th century. Bohemian Sporting Club's most famous player Paulino Alcantara(played 1916-18) at a very young age, where he won 2 Philippine club championships. An older Alcantara at FC Barcelona Alcantara career stats at FC Barcelona vis a vis Leo Messi published 2014(year when Messi broke Alcantara's record at FC Barcelona) He still holds the record for the youngest player to score a goal for FC Barcelona.