The TARCIS (Terminology, Application, and Reporting of Citation Searching) statement provides guidance on the use of citation searching in systematic literature reviews. Citation searching is a technique used to identify relevant sources of evidence by exploring the citation relationships of scientific records. The statement, developed through a four-round Delphi study involving 27 international methodological experts, includes 10 specific recommendations and four research priorities. The recommendations cover when and how to conduct citation searching, including the selection of seed references, use of electronic citation indexes, deduplication, and iterative citation searching. The statement also emphasizes the importance of clear reporting of citation searching methods and results. The research priorities focus on the effectiveness, applicability, and conduct of indirect citation searching methods, the value of citation searching, optimal methods for citation searching, and the reproducibility of existing studies. The TARCIS statement aims to standardize terminology, application, and reporting of citation searching, enhancing transparency, reproducibility, and comparability in systematic reviews.The TARCIS (Terminology, Application, and Reporting of Citation Searching) statement provides guidance on the use of citation searching in systematic literature reviews. Citation searching is a technique used to identify relevant sources of evidence by exploring the citation relationships of scientific records. The statement, developed through a four-round Delphi study involving 27 international methodological experts, includes 10 specific recommendations and four research priorities. The recommendations cover when and how to conduct citation searching, including the selection of seed references, use of electronic citation indexes, deduplication, and iterative citation searching. The statement also emphasizes the importance of clear reporting of citation searching methods and results. The research priorities focus on the effectiveness, applicability, and conduct of indirect citation searching methods, the value of citation searching, optimal methods for citation searching, and the reproducibility of existing studies. The TARCIS statement aims to standardize terminology, application, and reporting of citation searching, enhancing transparency, reproducibility, and comparability in systematic reviews.