The global outbreak of coronavirus disease (COVID-19), caused by SARS-CoV-2, has resulted in significant morbidity and mortality worldwide. Despite extensive research, no definitive antiviral treatment has been established, and current management primarily includes supportive care and combination therapies. In this context, natural bioactive compounds have gained attention for their potential therapeutic value. Curcumin, a principal component of turmeric (Curcuma longa L.), has long been used in traditional Asian medicine and is recognized as safe by regulatory authorities. Curcumin exhibits multiple pharmacological properties, including antiviral, anti-inflammatory, antioxidant, anti-pyretic and antiemetic effects, making it a promising complementary candidate for COVID-19 management. Previous studies have demonstrated curcumin’s antiviral activity against hepatitis viruses, influenza, Zika virus, chikungunya virus, HIV, HSV-2 and HPV, suggesting its broad-spectrum potential. Its anti-inflammatory and antioxidant effects may help counteract cytokine surge, oxidative stress, and respiratory complications seen in severe COVID-19 cases. Additionally, curcumin has shown efficacy in reducing fever, improving appetite, and alleviating symptoms associated with viral infections. While preclinical findings indicate encouraging outcomes, clinical evidence specific to COVID-19 remains limited. This review highlights the therapeutic promise of curcumin as a supportive treatment option for COVID-19 and emphasizes the need for well-designed clinical trials to validate its efficacy and safety in infected patients.