The 2018 Fuzion 100 Southsea Trophy was a professional tennis tournament played on outdoor grass courts.

It was the second edition of the tournament and was part of the 2018 ITF Women's Circuit.

It took place in Southsea, United Kingdom, on 25 June–1 July 2018.

The following players received a wildcard into the singles main draw: The following player received entry as an alternate: