Louis DiNapoli (born 1938) is a New York City mobster and soldier in the Genovese crime family. DiNapoli grew up in the East Harlem section of Manhattan and became a made member of the Genovese family in the early 1980s, joining the 116th Street Crew, which was headed by his older brother Vincent DiNapoli. The crew was heavily involved in labor racketeering in the N.Y.C. District Council of Carpenters, and used its influence to extort money from New York construction companies and contractors.
On March 21, 1986, Louis, Vincent, and other Genovese mobsters were indicted for labor racketeering. On May 5, 1988, Louis and Vincent were convicted of creating scheme to allocate contracts and obtain payoffs for constructing the concrete superstructures of 16 Manhattan buildings, including Jacob K. Javits Convention Center and Trump Plaza. Louis was sentenced to 14 years in prison. On June 28, 1991, a federal appeals court reversed the convictions, rebuking the trial judge for exercising undue pressure on the jurors. However, in 1992 the U.S. Supreme Court overturned the appeals court verdict and reinstated the convictions. The final outcome of this legal action is unknown.
In 1982, Vincent DiNapoli went to prison on racketeering charges for five years. Louis DiNapoli and soldier Louis Moscatiello handled the Carpenter Union rackets during Vincent's absence. On May 18, 1995, Louis DiNapoli and his other brother Joseph "Joey Dee" DiNapoli, a captain who currently serves on the Lucchese crime family's ruling panel, were arrested for labor racketeering. The DiNapolis were charged with defrauding a state program that awarded public contracts to companies headed by minorities (women, African-Americans, Latinos, etc.). Louis and Joseph set up three companies with figurehead minority owners that won over a dozen contracts for work at city schools and hospitals.
- Raab, Selwyn. Five Families: The Rise, Decline, and Resurgence of America's Most Powerful Mafia Empires. New York: St. Martin Press, 2005. ISBN 0-312-30094-8
- United States. Congress. Senate. Committee on Governmental Affairs. Permanent Subcommittee on Investigations. Organized Crime: 25 Years After Valachi: Hearings Before the Permanent Subcommittee on Investigations of the Committee on Governmental Affairs. 1988. 
- "REPUTED MOB LEADER AMONG 15 INDICTED ON RACKETEERING COUNTS" By ARNOLD H. LUBASCH March 22, 1986
- 937 F.2d 797 United States vs. DiNapoli
- "Federal Judge Given Rebuke For Mob Case" By CONSTANCE L. HAYS New York Times June 29, 1991
- UNITED STATES, PETITIONER v. ANTHONY SALERNO et al. Cornell University Law School
- *"12 Charged in Minority Businesses Scheme" by Selwyn Raab New York Times May 18, 1995