The 2018–19 National League 2 South is the tenth season (32nd overall) of the fourth tier (south) of the English domestic rugby union competitions since the professionalised format of the second division was introduced. At the end of the season, Rams became champions when they won away to Clifton on 6 April 2019, sealing promotion with two games to go. It was a fitting reward for the Berkshire club, who were by far the strongest side in the division. The runners up were Canterbury who claimed second spot after beating off stiff competition from the likes of Tonbridge Juddians and Henley Hawks. Despite finishing 21 points behind Rams, Canterbury's league results were still strong enough to enough to book a home promotion playoff against National League 2 North runners up, Chester. On 4 May