United won the Oxfordshire Senior Cup, beating Oxford City 6–1 in the final, three days after securing their league promotion.
[5] On 18 May 2015, Oxford United announced four pre-season friendlies against Didcot Town, Woking, Eastleigh and Coventry City.
[60] On 29 May 2015, Oxford United announced a trip to Austria for a week-long stay, which included a friendly against SC Wiener Neustadt.
[66] Having beaten their local rivals 2–0, Oxford were drawn away to fellow League Two side Dagenham & Redbridge in the Area Quarter-Final,[67] a match that also ended in a 2–0 victory.
An own-goal by Chey Dunkley early in the second half was followed by goals from Ashley Fletcher and Adam Hammill to give Barnsley a two-goal cushion.