Objectives: To summarize evidence in the literature on the predictors of insomnia in adults and to determine correspondences with diagnostic indicators of the NANDA-Ⅰ diagnosis Insomnia.Methods: An integrative review performed in Pubmed,Virtual Health Library and CINAHL Forty-eight articles published in Portuguese,English or Spanish from 2011 to 2018 were included.An analysis of correspondence between the predictors and the NANDA-Ⅰ related factors and associated conditions for Insomnia was performed.Results: There was a correspondence of the predictors found in this review with NANDA-Ⅰ related factors and associated conditions,except for grieving and frequent naps during the day.Smoking,caffeine intake,dysfunctional sleep beliefs,obesity and caregiver role strain are possible new related factors;chronic illness is a possible new associated condition and individuals going through changes in marital status,economically disadvantaged,female gender,increasing age and night shift worker are possible new at-risk populations.Conclusion: The predictors of insomnia that had a correspondence with the NANDA-Ⅰ elements can support the evidence base of the nursing diagnosis.The predictors found without a correspondence with the diagnosis can be considered for inclusion in the NANDA-Ⅰ classification,thereby supporting the clinical reasoning of nurses and students.