Gilbert

• Gilbert (given name), including a list of people and fictional characters
• Gilbert (surname), including a list of people

Australia

• Gilbert River (Queensland)
• Gilbert River (South Australia)

Kiribati

• Gilbert Islands, a chain of atolls and islands in the Pacific Ocean

United States

• Gilbert, Arizona, a town
• Gilbert, Arkansas, a town
• Gilbert, Florida, the airport of Winterhaven
• Gilbert, Iowa, a city
• Gilbert, Louisiana, a village
• Gilbert, Michigan, and unincorporated community
• Gilbert, Minnesota, a city
• Gilbert, Nevada, ghost town
• Gilbert, Ohio, an unincorporated community
• Gilbert, Pennsylvania, an unincorporated community
• Gilbert, South Carolina, a town
• Gilbert, West Virginia, a town
• Gilbert, Wisconsin, an unincorporated community
• Mount Gilbert (disambiguation), various mountains
• Gilbert River (Oregon)

Outer space

• Gilbert (lunar crater)
• Gilbert (Martian crater)

• Gilbert Collection, an art collection in the Victoria and Albert Museum
• Gilbert (band), a name used by English composer and musician Matthew Gilbert Linley
• Gilbert (film), a documentary on Gilbert Gottfried

• Gilbert Academy, a defunct private preparatory school for African Americans in Louisiana
• Gilbert School, a privately endowed secondary school that serves as the public high school for Winchester, Connecticut

• USC&GS Gilbert, a survey ship of the United States Coast and Geodetic Survey
• US FWS Charles H. Gilbert, a fisheries research ship of the United States Fish and Wildlife Service and (as NOAAS Charles H. Gilbert) the National Oceanic and Atmospheric Administration

• A. C. Gilbert Company, an American toy company
• Gilbert (unit), a CGS unit of magnetomotive force
• Gilbert Building (disambiguation), several buildings on the American National Register of Historic Places
• Gilbert Cell, a transistor circuit used in communication electronics
• Gilbert Hill, a monolith column of black basalt rock in Andheri, India
• Gilbert House (disambiguation), various buildings
• Gilbert Model, a social class model
• Gilbert Rugby, an English sporting-goods manufacturer
• Gilbert Street, Adelaide, Australia
• Gilbert's syndrome, a benign medical condition that may cause mild jaundice
• Gilbert (typeface), a typeface created in honor of artist Gilbert Baker
• Hurricane Gilbert, a 1988 Caribbean hurricane

• Gilberts (disambiguation)
• Fitzgilbert, including a list of people with the name
• Gilberto, a similar name