1N or 1-N may refer to: * 1st parallel north * Canon EOS-1N * Bell UH-1N Twin Huey, part of the U.S. Marine H-1 upgrade program * Canon F-1n, a model of Canon F-1 * Olympus OM-1n, a model of Olympus OM-1 * SH 1N, the North Island section of New Zealand State Highway 1 * 1N, a model of Toyota N engine * UH-1N Huey, see Bell UH-1 Iroquois * , a loop west of Centralia * Secondary State Highway 1N (Washington 1943-1970), now Washington State Route 507 from Centralia to Tenino * CUH-1N, Canadian version of what became the Bell 212 * Sikorsky HSS-1N Seabat, see Sikorsky H-34 * F7F-1N, see Grumman F7F Tigercat * F8F-1N Bearcat, see Grumman F8F Bearcat * XF8F-1N, see Grumman F8F Bearcat * J/1N Alpha, see Auster Autocrat