Gastineau may refer to:
People Brittny Gastineau (born 1982), American reality show personnality Henry Gastineau (1791–1876), English engraver and painter Lisa Gastineau (born 1959), American reality show personnality Mark Gastineau (born 1956), American football player Nathalie Gastineau (born 1981), French canoeist
Other uses Alaska-Gastineau Mine, Alaska, USA Gastineau Channel, Alaska, USA The Gastineau Girls, an American reality series Gastineau Peak, a mountain in Juneau, Alaska, USA Gastineau Range, a small mountain range in British Columbia, Canada
See also Gatineau (disambiguation)