PH-1, PH 1, PH.1, PH1 or variant, may refer to:
PH1 (star system) (Planet Hunters 1), the first system with a planet (PH1b - Planet Hunters 1 b) discovered by Planet Hunters; the star system also called KIC 4862625 or Kepler-64 Hall PH-1, a model of the Hall PH airplane PH1, a postcode in the PH postcode area of the United Kingdom PH1, IAU Minor Planet Center nomenclature for naming asteroids 1988 PH1, see 4768 Hartley 1991 PH1 1992 PH1, see 12320 Loschmidt 1994 PH1, see (9391) 1994 PH1 1999 PH1, see 19617 Duhamel pH-1 (rapper), a South Korean rapper PH-1, the official codename for the Essential Phone, Andy Rubin's first-generation Android device
See also
PhONEday, change to telephone numbering in the United Kingdom PHL (disambiguation), including Phl PHI (disambiguation) PH (disambiguation)