Found 16 symbols starting with NI:

An image from the Cave of Niaux in southwestern France, probably created around ten thousand years ago by the local Cro-Magnon population.
Nice people
A French hobo sign indicating that nice people live here.
Nickel (alchemy)
A symbol used in alchemy to indicate the metal nickel.
Night (alchemy)
One of several "time signs" used both in alchemy and early chemistry, this one representing night.
Night (alternate)
One of several "time signs" used in alchemy, this one representing night.
Nightshade Dragon egg
Icon used to indicate a Nightshade Dragon egg in the game DragonVale.
Nihon Jitensha Shinkōkai
Nihon Jitensha Shinkōkai, or Japan Keirin Association, often abbreviated NJS, was Japan's Bicycle Promotion Association.
Nine-pointed star
According to the Abjad system of Isopsephy, the word Bahá' has a numerical equivalence of 9, and thus there is frequent use of the number 9 in Bahá'í symbols. The most commonly used symbol connec…
Ninja Kiwi logo
the logo of the game web Ninja Kiwi
Harr Nishaan or Nishaan Sahib " हरि " " ਹਰਿ " is an official copyrighted symbol of Ravidassia religion. The Harr nishan can be found on top of the Ravidassias Bhawans or on the flag, ever…
Nitric acid (alchemy)
An alchemical symbol for nitric acid.
Nitric acid (alternate)
An 18th century chemical symbol for nitric acid.
Nitrogen dioxide
A symbol used in 18th century chemistry to indicate nitrogen dioxide, or nitrogenous air.
Nitrogenous air (alchemy)
An 18th century chemical symbol used to indicate nitrogen dioxide and other similar gasses.
nitrome logo
the games web nitrome logo
Chinese character representing "Niú", which can be variously translated as 'Ox', 'Cow' or 'Bull'.