The 2018 Lale Cup was a professional tennis tournament played on outdoor hard courts. It was the sixth edition of the tournament and was part of the 2018 ITF Women's Circuit. It took place in Istanbul, Turkey, on 9–15 April 2018.
The following players received a wildcard into the singles main draw:
The following players received entry using protected rankings:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser: