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Previous literature suggests a triadic interrelationship between adult attachment, mindfulness, and meaning in life. Yet, to the best of one’s knowledge, no prior studies have linked the 3 variables together. This is the literature gap that the present meta-analysis aims to address. To be able to address this gap and establish a triangular relationship between the 3 variables, a mediation model would need to be established. This would be done through conducting three distinct meta-analyses followed by structural equation modeling to establish the tripartite relationship. The three meta-analyses that have been done are as follows; one looked at previous studies that investigated the relationship between adult attachment and mindfulness, one looked at previous studies that investigated the relationship between adult attachment and meaning in life, and one looked at previous studies that investigated the relationship between mindfulness and meaning in life. Various databases were utilised to collect the previous studies done on the three variables using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). The EPHPP’s Quality Assessment Tool for Quantitative Studies was utilised to assess the quality of the included studies. The studies have been imported on Covidence website. JS have screened the studies’ titles and abstracts. The Fisher Z effect size was calculated from the correlation coefficient of each study using this formula (0.5*LN((1+(r))/(1-(r))) and the variance was calculated from the participants’ number of each study using this formula (1/(n-3)) then the effect size and the variance were used to run the final random effect sizes model analysis on SPSS 28 and get the forest plots. One also assessed study heterogeneity by calculating Cochrane’s Q and I2 statistic, assessed if the null-hypothesis can be rejected by running a Z-test, assessed publication bias through Egger’s regression and in case publication bias was indicated, Duval and Tweedie’s (2000) trim and fill technique was done. Finally and most importantly, structural equation modeling will be utilised to establish the mediation models linking the three relationships from the three meta-analyses together. The results from this study would inform the upcoming studies within the PhD program.