WebMay 4, 2020 · Here Are The Top 20 Largest Athletes In The World – They Are Truly Massive. By JJ Foster - May 4, 2020. When it comes to sports, size does matter…usually. And these athletes win on sheer size alone. Let’s find out who is the largest athlete of all time, and how big they really are. Nataliya Kuznetsova – 5’7″, 225 lb.