H20 (H twenty) may refer to:

• Highway H20 (Ukraine)
• HMS H20, a submarine
• McDonnell XH-20 Little Henry, a type of helicopter
• Nissan H20, a type of engine
• Xian H-20, a Chinese stealth bomber
• Halloween H20: 20 Years Later, a 1998 horror sequel
• H20, the ICD-10 code for uveitis

• H₂O (disambiguation)

Topics referred to by the same term

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