Gabby may refer to:

As a nickname:

  • Gabriel Agbonlahor (born 1986), English footballer for Aston Villa FC
  • Gabby Chaves (born 1993), Colombian-American race car driver
  • Gabby Douglas (born 1995), American artistic gymnast
  • Gabby Espinas (born 1982), Philippine Basketball Association player
  • Gabby Gabreski (1919-2002), American fighter ace in both World War II and the Korean War
  • Gabrielle Giffords (born 1970), U.S. congresswoman from Arizona; a survivor of the 2011 Tucson shooting
  • Gabby Hartnett (1900-1972), American Major League Baseball catcher and manager
  • George "Gabby" Hayes (1885–1969), American actor
  • Gabby Logan (born 1973), English presenter and former gymnast for Wales
  • Eugenio Lopez III (born 1952), chairman and CEO of Philippine media conglomerate ABS-CBN
  • Gabby Mayo (born 1989), American sprinter
  • Gabby Pahinui (1921–1980), Hawaiian musician
  • Gabrielle Reece (born 1970), American professional volleyball player, sports announcer, fashion model and actress
  • Gabourey Sidibe (born 1983), American actress known for her Oscar-nominated role in the film Precious
  • Gabby Street (1882-1951), American Major League Baseball catcher, manager, coach and radio broadcaster

As a stage name:

In fiction: