Background: Empirical research studies have highlighted the need to investigate the underlying cognitions and cognitive variables in relation to Internet Gaming Disorder (IGD). However, little is known about the possible cognitive-related impairments associated with IGD. Objectives: The present paper extends previous research and uncovers additional key general cognitive-related outcomes of IGD via a systematic review of the empirical literature. Methods: The PRISMA (preferred reporting item for systematic reviews and meta-analysis) guidelines were adopted. Internet-based bibliographic searches were conducted via seven major electronic databases (i.e., PsycARTICLES, PsycINFO, Web of Science, Core Collection BIOSIS Citation Index, MEDLINE, SciELO Citation Index, and PubMed) to access studies examining the association between IGD and cognitive outcomes. Results: A total of 17 empirical studies meeting the inclusion criteria were identified that investigated the relationships between IGD and cognitions and/or cognitive-related outcomes. Seven distinct cognitions and another ten distinct cognitive-related impairments related to IGD were identified. Conclusion: There is evidence to support the association of IGD with particular types of cognitions and specific cognitive-related impairments.