Elisha Dyer III (October 23, 1862 – June 2, 1917) was an American socialite prominent in Newport and New York society during the Gilded Age.

Together, they were the parents of[2] his siblings including George Rathbone Dyer, who died young; Brig.

[7][13] Upon his father's death in 1906, he and his siblings inherited $250 each with the remainder of the estate, valued at about $250,000, left to his mother.

[15] In November 1917, his widow sold their five-story residence at 37 West 56th Street in New York City.

[16] After his widows death in 1933, the estate (valued in excess of $1,000,000) was left to Sidney's granddaughter, Lauretta Patterson Robeson.