John Bettes may refer to:

• John Bettes the Elder (active c. 1531–1570) English artist whose few known paintings date from between about 1543 and 1550
• John Bettes the Younger (died 1616) English portrait painter and son of John Bettes the Elder

• Astros Field
• Astros, Greece
• Astrosmash
• Astrosnik
• Astrosniks
• Astrostrategy
• Astrotech Corporation
• Astrothrill
• Astrotrain
• Astroturf
• Astro-turf
• AstroTurf
• Astroturf campaign
• Astroturfer
• Astroturf group
• Astroturfing
• Astroturf PR
• Astroviridae
• Astroworld
• Astrozhski
• Astruc
• Astruc of Lunel
• A Study In Scarlet
• A Study in Scarlet
• A Study in Terror