Despite the constant growth in the use of online dating sites and mobile dating applications, research examining potential problematic use of online dating has remained scarce. Previous research has obviated problematic use of online dating in favour of users' personality correlates and scams through online dating services. A systematic review was carried out using PsycINFO and Web of Science databases to gather previous findings that address potential problematic use of online dating by (i) identifying use and motivations, (ii) assessing users' personality correlates, (iii) outlining negative correlates of use, (iv) examining sexual and impulsive behaviour, (v) exploring substance use and behavioural addictions in relation to online dating, and (vi) examining problematic use of online dating, resulting in 43 studies. Findings suggest that personality correlates such as neuroticism, sociability, sensation-seeking, and sexual permissiveness are related to greater use of online dating services. Sex-search and self-esteem enhancement are predictors of problematic use of online dating. Previous research coincides with online dating risks (e.g. fear of deception) and objectification tendency due to online dating services (sites and apps) design. Observations regarding methodological weaknesses and future research implications are included. Keywords Online dating. Problematic use of online dating. Dating applications. Dating sites. Excessive use. Problematic internet use Back in 1995, Match.com was launched for public use as a popular global online dating service. Within a decade, online dating became the second most popular industry for paid online content with an annual revenue of $1.9 billion (Matthews 2018), moving from being a service used by a minority to a tool frequently used by millions of individuals in modern societies. In 2007, location-based smartphone dating applications first appeared, which allowed