The alphamegalog of lakes lists the largest lake in the world for each letter of the alphabet. In this case, ‘largest’ is based on the size of the lake, which is not easy to determine consistently, hence subjective measures of greatness may come into play. Note that the casual parenthetical location information is neither complete nor consistent as to the balance between general and specific.

Aral Sea (Kazakhstan)
Baikal (Russia)
Caspian Sea (Asia)
Dubawnt (Canada)
Erie (USA, Canada)
Flathead (Montana)
Great Bear (Canada)
Huron (USA, Canada)
Issyk-Kul (Kyrgyzstan)
Jatuncocha (Peru)
Kyoga (Uganda)
Ladoga (Russia)
Michigan (USA)
Nyasa (Tanzania)
Ontario (USA, Canada)
Peipus (Estonia, Russia)
Qinghai (China)
Rukwa (Tanzania)
Superior (USA, Canada)
Tanganyika (Tanzania)
Urmia (Iran)
Victoria (Tanzania)
Winnipeg (Canada)
Xingkai (China)
Yellowstone (Wyoming)
Zhangdu (China)