Objectives: Sports often witness high anterior cruciate ligament (ACL) injuries, which are common and tend to recur frequently. Functional tests are crucial for aiding athletes in their return to sports (RTS) after ACL reconstruction (ACLR). By understanding this injury through implementing functional tests, the potential for reinjury can be reduced. Additionally, this approach can decrease therapeutic costs and facilitate a smoother rehabilitation process, ultimately enabling successful RTS. This study aims to compile a comprehensive functional test and its sensitivity and specificity for RTS after ACL injury reconstruction. Methods: This scoping review conducted an extensive survey of functional tests to assess the ability to RTS after ACL injuries. The search was performed on various databases, including Web of Science, PEDRO, Google Scholar, PubMed, ScienceDirect, SCOPUS, and CINAHL, covering the period from 2000 to January 2023. The purpose was to gather a comprehensive range of relevant studies and information on functional tests for evaluating RTS after ACL injuries. Furthermore, a manual search of the sources of articles was conducted and thoroughly examined. Results: Of the 31 papers reviewed, 14 were included in this scoping review. The results of these selected papers were thoroughly examined, reported, and analyzed as an integral part of the review process. They were related to balance and postural control, agility, power, screening, and movement pattern tests. Functional tests for RTS after ACLR in terms of sensitivity and specificity included hop, shuttle run, vertical jump, carioca, and lower extremity functional test protocol (LEFT). Discussion: An analysis of studies showed different functional tests. According to this study’s results, the most common functional tests, the hop group tests may be more common functional tests for RTS after ACLR in terms of sensitivity and specificity, which were the main focus of this scoping review. We hope these tests will be useful for personal trainers, athletic trainers, practitioners, and clinicians when evaluating injured athletes.