The 2018 Nottingham Open (also known as the Nature Valley Open for sponsorship purposes) was a professional tennis tournament played on outdoor grass courts in Nottingham, United Kingdom.

It was the 11th edition of the event for women and the 23rd edition for men.

It was classified as a WTA International tournament on the 2018 WTA Tour for the women, and as an ATP Challenger Tour event for the men.

The event took place at the Nottingham Tennis Centre in Nottingham, United Kingdom from 11 through 17 June 2018.

[1] The following players received wildcards into the main draw: The following players received entry into the singles main draw as special exempts: The following player received entry into the singles main draw using a protected ranking: The following players received entry from the qualifying draw: The following players received entry as lucky losers: The following players received wildcards into the main draw: The following players received entry from the qualifying draw: The following pair received a wildcard into the doubles main draw: