Mahlon R. Pitney IV (February 5, 1858 – December 9, 1924) was an American lawyer, jurist, and politician who served in the U.S. House of Representatives for two terms from 1895 to 1899. He later served as an associate justice of the U.S. Supreme Court from 1912 to 1922.

Mahlon Pitney
Supreme Court of the United States
Born 1858 in Morristown, NJ
Died 1924 in Washington, DC
FJC ID: 1891
Career output and lasting influence
Opinions attributed per year · peak 14/year
Later decisions citing those opinions, per year · peak 256/year
Supreme Court of the United States · 1912–1922
Both charts share the same year axis. Opinion counts include only opinions in our corpus attributed to this judge so far — a year at zero can mean an attribution gap, not judicial silence. Influence typically outlasts the career: citations keep climbing after the last opinion.
- Gender
- Male
- Race
- White
Prior employment
- New JerseyChancellor · 1908–1912
- Supreme Court of New JerseyJustice · 1901–1908
- New JerseyState senator · 1898–1901
- U.S. representative from New Jersey1895–1899
- Private practice, Morristown, New Jersey1889–1894
- Private practice, Dover, New Jersey1882–1889
Appointments
1912–1922 · Appointed by William H. Taft (Republican)Term ended: Resignation
Education
- Read law1882
- College of New Jersey (now Princeton University)A.B. · 1879