Dennis McCarthy
Member of the U.S. House of Representatives from New York's 23rd district
In office March 4, 1867 - March 3, 1871
Preceded by	Thomas T. Davis
Succeeded by	R. Holland Duell
Member of the New York Senate from the 22nd district
In office January 1, 1876 – December 31, 1879
Preceded by	Daniel P. Wood
Succeeded by	James Stevens
Member of the New York Senate from the 25th district
In office January 1, 1880 – December 31, 1885
Preceded by	Theodore M. Pomeroy
Succeeded by	Francis Hendricks
Acting Lieutenant Governor of New York
In office January 6, 1885 – December 31, 1885
Governor	David B. Hill
Preceded by	David B. Hill
Succeeded by	Edward F. Jones
Personal details
Born	(1814-03-19)March 19, 1814 Salina, New York, US
Died	February 14, 1886(1886-02-14) (aged 71) Syracuse, New York, US
Political party	Republican
Profession	Politician, Manufacturer

Dennis McCarthy (March 19, 1814 – February 14, 1886) was an American manufacturer and politician from New York.

He was the son of Thomas McCarthy.^[1] He attended Valley Academy in Salina and engaged in the manufacturing of salt. In the early 1840s he went into business operating a general store with his brother-in-law Silas Titus.^[2]

He was a Democratic member of the New York State Assembly (Onondaga Co.) in 1845, and was Mayor of Syracuse, New York, in 1853.

He was elected as a Republican to the 40th and 41st United States Congresses, holding office from March 4, 1867, to March 3, 1871. Afterwards he resumed his former business pursuits. In 1878 mayor James J. Belden formed a committee of citizens, St. Joseph's Hospital Aid Society, to look after the interests of St. Joseph's Hospital. McCarthy followed Theodore Dissel as president.^[3]

He was a member of the New York State Senate from 1876 to 1885, sitting in the 99th, 100th, 101st, 102nd, 103rd, 104th, 105th, 106th, 107th and 108th New York State Legislatures; and was President pro tempore in 1881, 1884 and 1885. He became Acting Lieutenant Governor of New York in 1885 after the resignation of Governor Grover Cleveland and the succession of Lt. Gov. David B. Hill to the governorship.

He died in Syracuse, New York, on February 14, 1886, and was buried at Saint Agnes Cemetery in Syracuse.^[4]

• United States Congress. "Dennis McCarthy (id: M000310)". Biographical Directory of the United States Congress.

• Dennis McCarthy at Find a Grave