Nile del Rio (1911-2003) was a professional singer and movie actress who was much better known as Imperio Argentina. A Spanish citizen, she was born in Argentina, and she was half Spaniard, half Argentine.

del Rio performed in Argentina's theaters, where she had a long and successful career. At that time, her stage name was Pettit Imperio.

But her most successful moments came after she moved to Spain. It was there that she changed her name to Imperio Argentina, as a way to honor her other country. While in Spain, del Rio participated in many movies, and she participated frequently on television and radio.

She obtained Spaniard citizenship in 1999.

Nile del Rio-Imperio Argentina died August 23, 2003.