Col. Washington Romeyn Vermilye (September 29, 1810 – December 23, 1876) was an American banker who served as president of the New York Stock Exchange.

After years of service in the regiment he continued his interest, being colonel of the veterans, and was actively involved in the building of new armory.

[6] Vermilye was a Republican in politics and was involved as one of the commissioners of the New York Public School System.

He was buried at Woodlawn Cemetery, Bronx alongside his wife, who had died in St. Augustine, Florida on April 11, 1874.

Woodlawn was near Kingsbridge, where the Vermilye family had an extensive farm and mansion since the early settlement of New York.

[6] In his will, he left significant funds to charities and created trusts for the benefit of his siblings and their children.