|Full name||Hertfordshire Rugby Football Union|
|Region||Hertfordshire, parts of London|
The Hertfordshire Rugby Football Union is the governing body for the sport of rugby union in the county of Hertfordshire in England. The union is the constituent body of the Rugby Football Union (RFU) for Hertfordshire, and administers and organises rugby union clubs and competitions in the county. It also administers the Hertfordshire county rugby representative teams.
Although the Hertfordshire Rugby Football Union was formed in 1935 and there have been club sides based in the county since as the late 19th century, a senior representative side did not take part in the County Championships until as late as 1952. Two years later after their debut, the county was finally awarded constituent status by the RFU in 1954, allowing them to have a representative on the RFU committee. Over the years Hertfordshire has become an important member of the RFU and is currently one of the stronger sides in the men's County Championships.
Hertfordshire senior men's county side currently play in the Bill Beaumont Division 1 South – the top level of the County Championships. They reached have several finals in the counties history, most recently in 2012 when they finished as winners after beating Lancashire 38–20 at Twickenham.
There are currently 29 clubs affiliated with the Hertfordshire RFU, most of which have teams at both senior and junior level. The majority of clubs are based in Hertfordshire, but there are also clubs from north-west London.
The Hertfordshire RFU currently runs the following competitions for club sides based in Hertfordshire and occasionally, north-west London: