Dia Evtimova was the defending champion, having won the previous event in 2011, but chose not to participate.
Tereza Mrdeža won the title, defeating
Paula Ormaechea in the final, 2–6, 6–4, 7–5.
Seeds
Draw
Finals
Top half
Bottom half
References
Main Draw
{{DEFAULTSORT:2018 Zagreb Ladies Open - Singles
Zagreb Ladies Open - Singles
Zagreb Ladies Open