"The US Postal Service will pay tribute to Mother Teresa for her humanitarian work," the USPS said in a statement.
"Noted for her compassion toward the poor and suffering, Mother Teresa, a diminutive Roman Catholic nun and honorary US citizen, served the sick and destitute of India and the world for nearly 50 years," it said.
The postage stamp would be unveiled at a function in Washington on Sep 5.
Every year, the US Postal Service releases a series of commemorative stamps, honouring people, places and institutions.
Mother Teresa died in Calcutta on Sep 5, 1997, and is buried there. She had been a citizen of India since 1948.
Mother Teresa, an ethnic Albanian, was born Agnes Gonxha Bojaxhiu on Aug 26, 1910, in Skopje in what is now the Republic of Macedonia.