1893 – Diamond Football Club is founded as a junior football club by members of the Star Rugby Club, who wished to play football.
1894 – Diamond win their first trophy the Junior Cup
1900, 04, 05, 06, 08 – Diamond win the Venus Shield
1929 – Diamond win the Venus Shield
1954 – Zealandia is founded by Dutch immigrants.
1962 – Hungaria is formed by Hungarian immigrants.
1963, 64, 65 - Diamond win Venus Shield
1964 – Zealandia changes its name to Wellington United.
1965 – Diamond win Central Region Championship and reach North Island Final of the Chatham Cup
1967 – Hungaria Wins the Venus Shield
1968 – Diamond and Wellington United Merge to form Wellington Diamond United (WDU).
1968 – WDU and Hungaria play in the first Central League
1970 – Hungaria win a playoff against Auckland's North Shore United and become the 8th team in the inaugural National League
1970 – Hungaria form New Zealand's first women's club
1971 – Hungaria combine with Miramar Rangers and form Wellington City to compete in the National League.
Both clubs retain their identity in lower divisions
1972 - WDU win the Central League and promotion to the National League
1974 – Despite setting a League record score in beating Eastern Suburbs 8-0 and reaching the Final of the Chatham Cup (lost 0-2 to Christchurch United) WDU are relegated
1974 – Hungaria wins Central League Division Two.
1975 – Wellington City relegated from the National League, Miramar Rangers withdraw from Wellington City arrangement.
1975 – Wellington Diamond United wins Central League, ironically taking the place of Wellington City in the National League.
1976 – Wellington Diamond United wins the National League!
1979 – Hungaria merge with Wellington City
1981 – Wellington Diamond United wins the National League!
1981 – Young WDU Striker, Wynton Rufer, makes his debut for New Zealand
1985 – Wellington Diamond United wins the National League! The team was made entirely of New Zealand born players and had an average age of only 23
1986 – Wellington Diamond United and Wellington City merge to form Wellington United AFC.
1991 – Wellington United reach the final of the Chatham Cup, but go down 2-1 to Christchurch United
1992 – The National League is abolished. Wellington United enter the Super Club
1996 - The National League is re-established and moved to Summer. Wellington United make the finals
1998 - Wellington United withdraw from the National League due to financial issues
1999 - Wellington United Dreamers, become the clubs first team and win Central League Division 2
2000 - The Central League is discontinued, Wellington United enter Capital Division 1 and win it
2001 - Wellington United win Capital Premier Division
2005 - The Central League is re-established and Wellington United win promotion to it
2009 – Wellington United Women's team win the Capital Women's Premier League and promotion to the Women's Central League for the first time.
2009 - Wellington United are relegated from Central League
2011 – Wellington United win promotion back to the Men's Central League.
2013 – Double tragedy as Men's Central League are relegated to the Premier League for the 2nd time in 4 years, and as a consequence the Premier League team (Reserves) are automatically relegated to Capital One.
2015 – Wellington United AFC form a partnership with the Wellington Phoenix FC.
2015 – Wellington United win the Premier League and then win promotion back to the Central League.
2015 – Wellington United Women's 1st team the Diamonds, come runners up in the Women's Central League.
2016 – Wellington United Women's 1st team the Diamonds, wins the Women's Central League!
2017 - Wellington United women's second team the Sapphires wins the Capital Women's Premier League.
2017 - Maggie Jenkins becomes the clubs first female international player when she makes her debut for the Football Ferns against Thailand
2018 – Wellington United Women's 1st team the Diamonds, wins the Women's W-League!
2018 - Wellington United women's 1st team, the Diamonds, win the Kelly Cup and get to the Semi Final of the Kate Sheppard Cup
2018 - Wellington United celebrate 125 years
2019 - The Joint venture between Wellington Phoenix and Wellington United comes to an end
2019 – Wellington United Women's 1st team the Diamonds, wins the W-League! ... for the 3rd time in 4 seasons!
2020 – Wellington United Women's 1st team the Diamonds, wins the W-League!
2021 - Wellington United Women's 1st team the Diamonds, wins the W-League! ... for the 4th time in 5 seasons!
2021 - Wellington United Women's 1st team the Diamonds, win the Kate Sheppard Cup