The Orissa (Alteration of Name) Act, 2011 officially changed the state's name from "Orissa" to "Odisha" and the language from "Oriya" to "Odia." The Act amended the Constitution of India, including Articles 164 and 273, and updated the First and Fourth Schedules. It empowered the government to adapt existing laws to reflect the new names. The Act came into force on November 1, 2011, aligning the state's identity with its cultural heritage.