John Glass

• John Glass (administrator), acting Superintendent of Penang while Francis Light was attending to other duties
• John M. Glass, mayor and chief of police
• John P. Glass, speaker of the Pennsylvania House of Representatives
• John Judah Glass, Canadian politician
• John Glass (footballer), Scottish footballer
• John Glass, Australian speedway rider under the pseudonym Mick Murphy (speedway rider)
• John Glass (academic), professor and synthetic biologist