Andrew I may refer to:

• Andrew I of Hungary (c. 1015 – before 1060)
• Andrew, Archbishop of Antivari (14th century)
• Andrei of Polotsk (c. 1325–1399)
• King Andrew the First, American political cartoon

• Asagioba, Serik
• Asagiobruk, Cubuk
• Asagiorenbasi, Gerede
• Asagiorencik, Nazilli
• Asagiovacik
• Asagiovacik, Gerede
• Asagiovacik, Hamamozu
• Asagipinarli, Bayburt
• Asagipiribeyli, Emirdag
• Asagiri class destroyer
• Asagirt
• Asagisahinler, Arhavi
• Asagisogutlu, Besni
• Asagitandir, Ihsaniye
• Asa (given name)
• Asagiyakacik, Nazilli
• Asagiyenice, Dazkiri
• Asagiyirikler, Karaisali
• Asagiyuva, Kastamonu
• Asago Gunzan Prefectural Natural Park
• ASAG - Postgraduate School of Psychology Agostino Gemelli
• Asagraea
• Asagran
• ASAH1 (gene)
• ASAH2B (gene)