Radio Networks
- Infinity Broadcasting (manages Westwood One Radio Network)
- Metro Networks
- Infinity Broadcasting (owns and operates over 180 stations)
- MTVi Group
- CBS Internet Group
- Nickelodeon Online
- BET.com
- Contentville.com (35%)
- Paramount Pictures
- MTV Films
- Nickelodeon Movies
- The Free Press
- MTV Books
- Nickelodeon Books
- Simon & Schuster
- Pocket Books
- Scribner
- Touchstone
- CBS
- UPN
- MTV Network
- MTV
- Nickelodeon
- Nick at Nite
- TV Land
- CMT
- TNN
- VH1
- Noggin (joint venture with Children's Television Workshop)
- Showtime Networks
- Showtime
- The Movie Channel
- Sundance Channel (joint venture with Robert Redford and Universal Studios)
- FLIX
- SET Pay-Per-View (sporting and entertainment events)
- BET
- Comedy Central
- Paramount
- Spelling Entertainment Group (80%)
- Big Ticket Television
- Viacom Productions
- King World Productions