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- The Naked Brothers Band (2007–2009), teen sitcom
- Naked City (1958–1963), police drama
- The Naked Truth (1995–1998), sitcom
- Nakia (1974), crime drama
- The Name of the Game (1968–1971), adventure/ mystery
- Name That Tune (1952–1985), game show
- Nancy (1970–1971), sitcom
- The Nancy Walker Show (1976), sitcom
- The Nanny (1993–1999), sitcom
- Nanny 911 (2004–2007, 2009 – present), reality
- Nanny and the Professor (1970–1971), sitcom
- Nash Bridges (1996–2001), crime drama
- Nashville (2007), reality/ soap
- Nashville Star (2003–2008), reality
- The Nat King Cole Show (1956–1957), music/ variety
- NBC Sunday Night Football (September 10, 2006 – present), sports
- NBC Sunday Showcase (1959), variety/ drama
- NCIS (September 23, 2003 – present), police procedural
- NCIS: Los Angeles (September 22, 2009 – present), police procedural
- Ned's Declassified School Survival Guide (2003–2007), teen sitcom
- Ned & Stacey (1995–1997), sitcom
- Needles and Pins (1973), sitcom
- Nero Wolfe (1981), mystery/ crime drama
- A Nero Wolfe Mystery (2001–2002), mystery/ crime drama
- The Net (1998–1999), action/ adventure
- The New Addams Family (1998–1999), sitcom
- The New Adventures of Batman (1977), filmation
- The New Adventures of Beans Baxter (1987–1988), adventure/ comedy
- The New Adventures of Jonny Quest (1986–1987), cartoon
- The New Adventures of Old Christine (2006–2010), sitcom
- The New Adventures of Perry Mason (1973–1974), legal drama
- The New Adventures of Robin Hood (1997–1998), adventure/ fantasy
- The New Adventures of the Lone Ranger (1982–1993), cartoon
- The New Adventures of Zorro (1981), cartoon
- The New Adventures of Zorro (1997–1998), cartoon
- New Amsterdam (2008), drama
- The New Andy Griffith Show (1971), sitcom
- The New Archie and Sabrina Hour (1977), cartoon
- The New Dick Van Dyke Show (1971–1974), sitcom
- The New Dragnet (1989–1991), crime drama
- A New Kind of Family (1979–1980), sitcom
- The New Lassie (1989–1991), sitcom
- The New Leave It to Beaver (1983–1989), sitcom
- The New Loretta Young Show (1962–1963), sitcom
- The New Mike Hammer (1986–1987), crime drama
- The New Odd Couple (1982–1983), sitcom
- The New People (1969–1970), drama
- The New WKRP in Cincinnati (1991–1993), sitcom
- New Year's Eve with Carson Daly (December 31, 2003 – present), variety
- New York News (1995), drama
- New York Undercover (1994–1998), crime drama
- New Zoo Revue (1972–1977), children's series
- Newhart (1982–1990), sitcom
- The NewsHour with Jim Lehrer (October 20, 1975 – present), news
- The Newlywed Game (1966–1999, 2009–present), game show
- Newlyweds: Nick and Jessica (2003–2005), reality
- NewsRadio (1995–1999), sitcom
- Next (2005–2008), reality/ dating
- Nichols (1971–1972), western
- Nick Freno: Licensed Teacher (1996–1998), sitcom
- Night Court (1984–1992), sitcom
- Night Gallery (1970–1973), anthology
- Night Man (1997–1999), action/ adventure/ sci-fi
- Night Stalker (2005–2006), horror, thriller
- Night Visions (2001), science fiction/ anthology
- Nightline (1980–present), news
- Nightmare Cafe (1992), science fiction
- The Nightmare Room (2001–2002), children's science fiction anthology
- Nightmares and Dreamscapes: From the Stories of Stephen King (2006), horror
- Nikita (September 9, 2010 – present), thriller/ drama
- Nikki (2000–2002), sitcom
- The Nine (2006–2007), drama
- Ninja Warrior (2007–present), sports/game show
- Nip/Tuck (2003–2010), medical drama
- No Ordinary Family (2010–2011), science fiction
- Noah Knows Best (2000), teen comedy
- Noah's Arc (2005–2006), comedy drama
- The Norm Show (1999–2001), sitcom
- Normal, Ohio (2000), sitcom
- North Shore (2005–2008), prime time soap opera
- Northern Exposure (1990–1995), comedy drama
- Not Necessarily the News (1983–1990), sketch comedy/ satire
- Notes from the Underbelly (2007–2008), sitcom
- Nothing Sacred (1997–1998), drama
- Nova (March 3, 1974 – present), science documentary
- Now and Again (1999–2000), science fiction
- Nowhere Man (1995–1996), drama
- NUMB3RS (2005–2010), police procedural
- Nurse (1981–1982), medical drama
- Nurse Jackie (June 8, 2009 – present), medical dramedy
- Nurses (1991–1994), sitcom
- The Nutt House (1989), sitcom
- NYPD Blue (1993–2005), police procedural
Read more about this topic: List Of American Television Series