ABSTRAKCOVID-19 merupakan penyakit infeksi saluran nafas akut yang disebabkan oleh Coronavirus tipe SARS-Cov-2. COVID-19 masih menjadi ancaman seluruh dunia karena morbiditas dan mortalitasnya yang tinggi. Tingkat keparahan dan kematian pasien COVID-19 dipengaruhi oleh diabetes melitus, hipertensi, usia dan obesitas. Namun saat ini masih terdapat kontroversi dalam hasil penelitian mengenai faktor komorbid diabetes ellitus tipe 2 (DM tipe 2) pada COVID-19. Penelitian ini bertujuan mengetahui pengaruh antara DM tipe 2 terhadap keparahan dan kematian COVID-19. Artikel diambil dari PubMed, ScienceDirect, Google Scholar, ProQuest, dan Springer Link. Artikel yang dianalisis adalah artikel yang diterbitkan Desember 2019- Agustus 2020, fulltext dengan desain studi observasional, analisis multivariat, dan mencantumkan adjusted odds ratio (aOR). Kata kunci yang dipakai untuk pencarian artikel adalah (Type 2 diabetes mellitus OR diabetic) AND (mortality OR severity) AND (COVID-19 OR Coronavirus OR SARS-CoV-2) AND ("adjusted odds ratio" OR "aOR"). Artikel dikumpulkan dengan diagram PRISMA dan dianalisis dengan Review Manager application 5.4 dengan model analisis random effect. Penelitian ini menganalisis10 artikel dan mendapati bahwa DM tipe 2 meningkatkan keparahan COVID-19 (aOR = 1,15; 95% CI= 1,11-2,15; p= 0,004) meningkatkan kematian COVID-19 (aOR = 1,65; 95% CI = 1,27-2,16; p 0,001). Kesimpulannya bahwa diabetes melitus tipe 2 meningkatkan risiko keparahan dan kematian pasien COVID-19.Kata kunci: Diabetes Melitus, Keparahan, Kematian, COVID-19 ABSTRACTCOVID-19 is an acute airway infection caused by Coronavirus (SARS-Cov-2). COVID-19 remains a worldwide threat due to its high morbidity and mortality. The severity and mortality of COVID-19 patients are mainly affected by diabetes mellitus, hypertension, age, and obesity. This study aims to determine the influence of type 2 diabetes mellitus on the severity and mortality of COVID-19. This was a systematic review and meta-analysis. The articles were obtained from PubMed, ScienceDirect, Google Scholar, ProQuest, and Springer Link. The articles were published from December 2019- August 2020, full-text articles with observational study design, multivariate analysis, and (adjusted odds ratio/aOR). Keywords to search for articles were (Type 2 diabetes mellitus OR diabetic) AND (mortality OR severity) AND (COVID-19 OR Coronavirus OR SARS-CoV-2) AND ("adjusted odds ratio" OR "aOR"). Articles collected using the PRISMA diagram and analyzed using Review Manager application 5.4 with a random effect model. Ten studies were included in the meta-analysis. The results showed that Type 2 DM increased the severity of COVID-19 (aOR = 1.15; 95% CI= 1,11-2,15; p = 0,04) and the mortality of COVID-19 (aOR = 1,65; 95% CI = 1,27-2,16; p 0,001). Conclusion: Type 2 diabetes mellitus increased the severity and mortality of COVID-19.Keywords: Diabetes Mellitus, Severity, Mortality, COVID-19