Tillard is an English surname. Notable people with the surname include:

• Charles Tillard (1851–1954), English cricketer
• Elliot Tillard (1880–1967), English first-class cricketer
• James Tillard, first person to land on Sabrina Island in the Azores
• John Tillard (born 1924), former English cricketer
• Violet Tillard (1874−1922), English suffragette, nurse and pacifist

• Calton, Edinburgh
• Calton Gaol
• Calton Jail
• Calton, Staffordshire
• Calton (ward)
• Calto (opera)
• Caltoun Hill
• Cal Towey
• Caltowie
• Caltowie, South Australia
• Caltractin
• Cal Train
• Caltrain depot
• Caltrop family
• Caltuna
• Caltunu River
• Ca Lu
• Caluag
• Calubcub
• Calubcub, Batangas
• Calucechinus
• Cal-UCLA rivalry
• Caludon
• Caludon Castle
• Calugareanu