Gajinder is a Sikh given name meaning “Lord of elephants, mighty.”
“Lord of elephants, mighty”
English gloss from the Gurdwaras.com Sikh names reference. Spellings vary; confirm the Gurmukhi with your family or granthi if you are choosing a name for a hukamnama or a legal document.
Listed here as boy. In Sikh practice the given name is usually followed by Singh (for a boy) or Kaur (for a girl). Those are religious names, not family surnames.
Noted origin in this reference: Sanskrit.