Background: Arterial hypertension (AH) is a chronic disease distributed worldwide, and the Angiotensin II receptor type 2 (AGTR2) gene variants are potential DNA markers to study in association with this disease. Objective: This systematic review (SR) aimed to identify single nucleotide variants in the AGTR2 gene as genetic markers associated with AH. Methods: The electronic databases MEDLINE, Web of Science, SCOPUS, Cochrane Central Register, EMBASE, SciELO, and TripDatabase were searched for research up to September 2023. Case-control studies with DNA variants in the AGTR2 gene associated with AH as the outcome were included in the review. Boolean connectors and keywords were used according to each database. Results: After diverse rounds of scrutiny, a final number of eight articles were included for 8911 participants, comprising 5451 cases and 3460 controls. A significant proportion of the selected studies were performed in Asian populations and were heterogeneous. Although 238 variants were shown in the gnomAD v2.1.1 database for September 2023, only six variants were identified in all the analyzed studies. Conclusions: The results obtained were not conclusive that a specific variant located in the AGTR2 gene has a strong association with AH. The study of this gene re-emerged last year as an essential target to investigate due to its participation in the development of agonist therapy to treat mild COVID-19 cases. Future studies with better statistical power are desirable to replicate the primary findings.