The 2012–13 Spartan South Midlands Football League season (known as the 2012–13 Molten Spartan South Midlands Football League for sponsorship reasons) was the 16th in the history of Spartan South Midlands Football League a football competition in England.
This was to fulfil the expansion of the Isthmian League Divisions One North and South from 22 to 24 clubs each.
[1] The two clubs were to be promoted on a points per game basis,[2] and the two runners-up with the best PPG were VCD Athletic (Kent Football League) and Guernsey (Combined Counties League).
Three others – Aylesbury United (Spartan South Midlands League), Redhill (Sussex County League) and Barkingside (Essex Senior League) – were also confirmed as promoted by the FA on 17 May, due to resignations and non-promotions elsewhere.
From this league, only AFC Dunstable, Aylesbury United, Dunstable Town, Haringey Borough, Oxhey Jets and Tring Athletic applied for promotion.