1 Largest Star - Betelgeuse
2 Largest Planet in Solar System - Jupiter
3 Largest Continent - Asia
4 Largest Island - Greenland
5 Largest Ocean - Pacific
6 Largest Lake (Salt Water) - Caspian Sea
7 Largest Lake (Fresh Water) Lake Superior- (N.America)
8 Largest Artificial Lake - Lake Mead at Boulder Dam(USA)
9 Largest River - Amazon
10 Largest Bay - Hudson Bay (N. Canada)
11 Largest Sea - South China Sea
12 Largest Desert - Sahara
13 Largest Country - Russia
14 Largest Country in population - China
15 Largest Democracy India
16 Largest Animal Blue Whale
17 Largest Land Animal - African Bush elephant
18 Largest archipelago - Indonesia
19 Largest Peninsula - Arabia
20 Largest Forest - Coniferous Forests (N. Russia)
21 Largest Bird - Ostrich
22 Largest Sea Bird - Albatross
23 Largest River Island - Majuli (Assam)
23 Largest Strait - Tartar Strait
24 Largest active Volcano - Mauna lao on Hawaii
25 Largest Cold Desert - Gobi (Mongolia)