NH1, or NH-1, or similar, may refer to: NH1 News, a New Hampshire based television and radio news network formerly aired on WBIN-TV and WNNH Howard NH-1, a World War II instrument training aircraft National Harbor Line (Route NH1), a WMATA bus line in Prince George's County, Maryland National Highway 1 (Cambodia) National Highway 1 (India) New Hampshire's 1st congressional district