Half width may refer to

• Full width at half maximum
• halfwidth and fullwidth forms
• Half-width kana

• Alton Adams
• Altona, Hamburg
• Altona, IL
• Altona, Illinois
• Altona, IN
• Altona, Indiana
• Alton A. Lennon
• Altona, Manitoba
• Altona Meadows
• Altona Meadows, Victoria
• Alton and Eddie
• Altona, New York
• Altona North
• Altona North, Victoria
• Altona railway station
• Altona (town), Clinton County, New York
• Altona Township, MN
• Altona Township, Pipestone County, Minnesota
• Altona, Victoria
• Alton Baker park
• Alton Baker Park
• Alton Barnes
• Alton "Big Al" Carson
• Alton B. Parker
• Alton Brooks Parker