Nia H. Gill (born March 15, 1948) is an American attorney and Democratic Party politician, who represented the 34th Legislative District in the New Jersey Senate from 2002 to 2024.

She ran unsuccessfully as a candidate in the June 2012 primary election to fill the seat in Congress left vacant by the death of Donald M. Payne, the former U.S. Representative for New Jersey's 10th congressional district.

Most of the communities added to District 34, which at the time was a Republican stronghold and had been for nearly two decades prior, were heavily Democratic and contributed to Gill's landslide victory over first-time incumbent Norman M.

[4] Gill is a sponsor of the measure recently signed into law to criminalize the deprivation of civil rights by public officials, making racial profiling a state crime.

On June 4, 2007, Governor Corzine announced and filed his intent to nominate Stuart Rabner to be the next Chief Justice of the New Jersey Supreme Court, replacing James R. Zazzali, who was nearing mandatory retirement age.

State Senator Ronald Rice withdrew his objections to Rabner's nomination on June 15, 2007, after a meeting with the governor.

While she did not respond to initial media requests to explain the nature of her concerns, anonymous lawmakers cited in The New York Times indicated that the objection was due to Rabner's lack of bench experience and Governor Corzine's failure to consider a minority candidate for the post.

[11] However, although Codey won the primary, he later announced his retirement from the Senate and Assemblyman John F. McKeon became the Democratic candidate in the general election.

Gill was a candidate in the June 5, 2012, primary election to fill the seat in Congress left vacant by the death of Donald M. Payne, the former U.S. Representative for New Jersey's 10th congressional district.

Also competing for that nomination was Dennis R. Flynn of Glen Ridge, Newark Councilmen Donald Payne Jr. (son of the congressman), Ronald C. Rice (son of State Senator Ronald Rice), Irvington Mayor Wayne Smith, and Cathy Wright of Newark.