Donald Milford Payne Jr. (December 17, 1958 – April 24, 2024) was an American politician who served as the U.S. representative for New Jersey's 10th congressional district from 2012 until his death in 2024. A member of the Democratic Party, Payne served as president of the Newark city council from 2010 to 2012.

Following the death of his father, U.S. Representative Donald M. Payne, on March 6, 2012, Payne ran in the primary to succeed him in Congress. His father was first elected in 1988 and re-elected 11 times without significant opposition. Payne Jr. won the June 5, 2012, Democratic primary election, which is tantamount to election in the heavily Democratic district, and the November 6, 2012, general election. Payne Jr. was re-elected five times prior to his death in office in 2024.

Payne was born on December 17, 1958, in Newark, New Jersey, where he was also raised alongside his two sisters, Wanda and Nicole. He was a 1976 graduate of Hillside High School. His father, Donald M. Payne, served in the United States House of Representatives from 1989 until his death in 2012, and was the first African American to represent the state of New Jersey in Congress. His mother, Hazel Payne (née Johnson), died in 1963, when Payne was five years old.

As a teenager, he founded and was the first president of the Newark South Ward Junior Democrats. He studied graphic arts at Kean University. He was an adviser at the YMCA Youth in Government program.

Payne worked for the New Jersey Highway Authority from 1991 until he joined the Essex County Educational Services Commission in 1996, where he worked as the supervisor of student transportation.

In 2010, Payne was reelected to the Municipal Council of Newark with 19% of the vote. Other candidates elected were Mildred C. Crump, Luis Quintana, and Carlos Gonzales.

As a city councilman, Payne supported Planned Parenthood, stem-cell research, Medicaid, and education funding.

In July 2010, Payne was elected president of the Newark City Council, succeeding Crump.