Emilie Antonia of Oldenburg-Delmenhorst (15 June 1614 in Delmenhorst – 4 December 1670 in Rudolstadt), was Princess consort of Schwarzburg-Rudolstadt, and then regent of Schwarzburg-Rudolstadt during the minority of her son Albert Anton from 1646 to 1662.

Emilie was the daughter of Count Anthony II of Oldenburg and his wife Sibylle Elisabeth of Brunswick-Dannenberg.

When her husband died in 1646, she took up government as guardian and regent for her son, Albert Anton.

Emilie gave her children a religious education along the lines promoted by the Virtuous Society.

During her son's rule, Fritsch eventually rose to the post of Chancellor.