The 1905 United States Senate election in New York was held on January 17, 1905, by the New York State Legislature to elect a U.S. Senator (Class 1) to represent the State of New York in the United States Senate.
Republican Chauncey M. Depew had been elected to this seat in 1899, and his term would expire on March 3, 1905.
At the State election in November 1904, large Republican majorities were elected for a two-year term (1905-1906) in the State Senate, and for the session of 1905 to the Assembly. The 128th State Legislature met from January 3, 1905, on at Albany, New York.
Late in 1904, Ex-Governor Frank S. Black tried to be nominated to succeed Depew. Black was supported by Governor Benjamin B. Odell, Jr., but after intense fighting behind the scenes, Odell finally dropped Black and accepted Depew's re-election which had been supported by his fellow Senator Thomas C. Platt and Speaker S. Frederick Nixon.
The Republican caucus met on January 16. They re-nominated the incumbent U.S. Senator Chauncey M. Depew unanimously.
The Democratic caucus met also on January 16. They nominated again Smith M. Weed who had been the candidate of the Democratic minority in the U.S. Senate election of 1887.