Android Version history by API level

Android Version history by  Application Programming Interface (API) level

• Android 1.0 (API 1)
• Android 1.1 (API 2)
• Android 1.5 Cupcake (API 3)
• Android 1.6 Donut (API 4)
• Android 2.0 Eclair (API 5)
• Android 2.2 Froyo (API 8)
• Android 2.3 Gingerbread (API 9)
• Android 3.0 Honeycomb (API 11)
• Android 4.0 Ice Cream Sandwich (API 14)
• Android 4.1 Jelly Bean (API 16)
• Android 4.4 KitKat (API 19)
• Android 5.0 Lollipop (API 21)
• Android 6.0 Marshmallow (API 23)
• Android 7.0 Nougat (API 24)
• Android 8.0 Oreo (API 26)
• Android 9 Pie (API 28)
• Android 10 (API 29)
• Android 11 (API 30) 

Source: Wikipedia