150,000. The Rungrado May Day Stadium in Pyongyang, North Korea.
Giants stadium has the second most seating capacity
colts
ANZ stadium in Sydney (Formely known as Telstra Stadium or Stadium Australia) has a capacity of 82000.
Spartan Stadium has a seating capacity of 75,005 people.
Kinnick Stadium has a seating capacity of 70,585 people.
The Pennsylvania State University's Beaver Stadium. 110,000
Byrd Stadium has a seating capacity of 51,802 people.
Lane Stadium has a seating capacity of 65,632 people.
If you mean by stadium, an amphitheater, Rome's largest was the Colosseum, having a seating capacity of 50,000. Now here's the tricky part, "stadium" in Latin could refer to a race course. If that's what you mean by the word stadium, it was the Circus Maximus which had a seating capacity of 150,000.
Camp Randall Stadium has a seating capacity of 80,321 people.
The Gillette Stadium seating capacity is 68,756.
The Cotton Bowl stadium has a seating capacity of 92,100 people.