This study tries to review studies on the stemming process in non-standard Indonesian Language. This is done to understand the methods that researchers use to collect data from various sources, process the data that has been collected, and classify data so that it becomes information that is easier to understand. The researcher collected, filtered, and reviewed the discovered research papers using a Systematic Literature Review approach. We collect research works from ScienceDirect, IEEE, arXiv, ACM Digital Library, Semantic Scholar, Google Scholar, Springer, and Elsevier by choosing research published from 2016 to 2022. The purpose of the researcher conducting this literature review is to understand stemming in Indonesian, gain an understanding of data collection techniques, stemming methods, and study stemming results from previous research. This study collects and summarizes twenty-seven stemming studies on the Indonesian language, selected from the forty-seven previously collected studies. The study was conducted regarding how to collect data, the language-stemming research methods used, and the stemming research results.

Keywords : Stemming, Indonesian Language, Non-Standard, Natural Language Processing, Information Retrieval.