When Is Mardi Gras Day 2025. The word mardi gras means fat tuesday in the french language. Mardi gras is the final day of carnival, the three day period preceding the beginning of lent, the sunday, monday, and tuesday immediately before ash wednesday.

Mardi gras 2025 will be celebrated on tuesday, march 4, 2025. Mardi gras, fat tuesday, will next be celebrated in louisiana on tuesday, march 4, 2025.