Background: Peak speed is an essential physical quality in Gaelic games due to the offensive, defensive, and transitional nature of the sports. Objectives: The aims of the study were to systematically search the literature for studies examining peak speed during Gaelic games match-play using Global Positioning System (GPS) technology, to assess the GPS methodologies implemented and report normative values for peak speed by sport. Methods: Keywords were combined to search and identify studies reporting peak speed values recorded using GPS technology during Gaelic games match-play. Key details such as GPS brand/model, number of satellites connected, and firmware version were extracted. A risk of bias tool was designed to rate the level of detection bias within each study. Results: Twenty-one (N=21) studies met the inclusion criteria. Eight studies examined peak speed in hurling and men’s Gaelic football, respectively, while four camogie and one ladies Gaelic football study were identified. Twenty-nine percent (29%) of included studies were graded as having a high risk of bias in at least one category. Peak speeds between 7.81 to 9.97 m·s-1 were reported in hurling and men’s Gaelic football and between 5.88 to 7.45 m·s-1 in camogie and ladies’ Gaelic football. Conclusions: The dearth of literature examining peak speed in both female sports requires additional investigation, particularly in relation to the sprint profile of ladies Gaelic football. It is recommended that practitioners are cognisant of the methodological considerations which can be used as a ‘checklist’ to ensure accurate and reliable data are collected when using GPS technology to monitor peak speed.