[1] Along with competing in League One, the club also participated in the FA Cup, EFL Cup and EFL Trophy.

The season covers the period from 1 July 2017 to 30 June 2018.

Source: [citation needed] On 16 October 2017, Southend United were drawn away to Yeovil Town in the first round.

[5] On 16 June 2017, Southend United were drawn at home to Newport County in the first round.

[7] After finishing as runners-up in their group, Southend were drawn away to Peterborough United in the second round.