Kōichi Saitō may refer to:

• Kōichi Saitō (photographer) (born 1935), Japanese photographer
• Kōichi Saitō (film director) (1929–2009), Japanese film director
• Kōichi Saitō (cinematographer), Japanese cinematographer

• John Urquhart (Washington politician)
• John Urschel
• John Usher (colonist)
• John Usher (disambiguation)
• John Usher of Boston
• John Ussher (1703–1749)
• John Ussher (1703–49)
• John Uzoma Ekwugha Amaechi
• John Uzzell Edwards
• John (vacuum cleaner)
• John V. A. Fine
• John V.A. Fine
• John V. A. Fine, Jr.
• John V. A. Fine Jr.
• John Vale
• John Valencia
• John Valentine (composer)
• John Valentine Dittemore
• John Valentine Haidt
• John Valentine Smith
• John Valentine Stevens
• John Valentine Wistar Shaw
• John Valladares
• John Vallins
• John Valmore Pearson