Some proper nouns that start with N are:
Nabisco
Nagoya, Japan
Namibia
Nanjing, China
Naples, Italy
Nashville, TN
Nathan's Hot Dogs
Nathaniel Hawthorne, American author
'Native Son' by Richard Wright
Nauru
Nebraska
Nehi Peach Soda
Nehru, Jawaharlal
Nepal
Nero, Emperor of Rome
Nestle's Crunch Bar
Netherlands
Netherlands Antilles
Neville Chamberlain
New Brunswick
New Hampshire
New Jersey
New Mexico
New Orleans, LA
New South Wales
New York
New York City
New York Times (The)
New York Times Building, New York (34th tallest building in the world)
New Zealand
Newfoundland
Nez Perce, Native American Tribe
Niagara Falls, NY
Nicaragua
Nicholas II, Tsar of Russia
Niger (Republic of)
Niger River
Nigeria
Nike Shoes
Nikolai Gogol, Ukrainian-born Russian author
Nile River
Nina Tower I, Hong Kong (33rd tallest building in the world)
Nissan
Nixon, Richard
Nixon, Richard M.
No Country For Old Men, 2007 movie
Nordstrom, Inc.
'North by Northwest', 1959 movie with Cary Grant and Eva Marie Saint
North Dakota
North Korea
Norway
Nosferatu, 1922 movie with Max Schreck
Nostradamus
Notre Dame Cathedral, Paris
Nova Scotia
A proper noun is the name of a specific person, place, or thing.
Examples of proper nouns with six or more letters that start with N are:
Nabisco
Nagoya, Japan
Namibia
Nanjing, China
Naples, Italy
Napoleon Bonaparte
Nathan's Hot Dogs
Nathaniel Hawthorne, American author
'Native Son' by Richard Wright
Nebraska
Nefertiti
Nelson Mandela
Nestle's Crunch Bar
Netherlands
Netherlands Antilles
Neville Chamberlain
New Brunswick
New Jersey
New Mexico
New Orleans, LA
New South Wales
New York
New York Times (The)
New York Times Building, New York (34th tallest building in the world)
New Zealand
Newfoundland
Nez Perce, Native American Tribe
Niagara Falls, NY
Nicaragua
Nicholas II, Tsar of Russia
Nigeria
Nikolai Gogol, Ukrainian-born Russian author
Nile River
Nina Tower I, Hong Kong (33rd tallest building in the world)
Nissan
'No Country For Old Men', 2007 movie
Nordstrom, Inc.
'North by Northwest', 1959 movie
North Carolina
North Dakota
North Korea
Norway
Nosferatu, 1922 movie with Max Schreck
Nostradamus
Notre Dame Cathedral, Paris
Nova Scotia
Proper nouns of six or more letters that start with N are:
Norway