Joseph P. Kennedy, played by Matt Letscher, is a recurring character in the fifth season. He is a legitimate business man with ties to bootlegging. He is a member of the board of the Mayflower Grain company. Nucky hopes to partner with him with repeal of prohibition imminent. He is based on the historical figure of the same name.
- Nucky Thompson: Business Associate
- Margaret Thompson: Business Associate
- Charles Gabler: Business Partner
- Theodore Rollins: Business Partner