Agnes Wilhelmine von Wuthenau, Countess of Warmsdorf (4 December 1700 - 14 January 1725) was a German noblewoman and the first wife of Augustus Louis, Prince of Anhalt-Köthen.

She became engaged to Gisela Agnes's son, Prince Augustus Louis of Anhalt-Köthen, on 18 November 1721.

She was created Countess of Warmsdorf by Charles VI, Holy Roman Emperor.

[3] As the marriage was initially considered morganatic, she did not obtain the title and style of princess.

[4] They had two daughters, who were all recognized as princesses of Anhalt: Agnes died on 14 January 1725, three years before her husband succeeded his brother as the ruling Prince of Anhalt-Köthen.