Which Gundam show is where shown on Cartoon Network?

The Gundam show that was most prominently shown on Cartoon Network was Mobile Suit Gundam Wing.

It aired in the United States from 1999 to 2001 and was a huge success, introducing many viewers to the world of Gundam.

While Cartoon Network did air some other Gundam series later, like Mobile Suit Gundam SEED and Mobile Suit Gundam SEED Destiny, Wing was the one that made the biggest impact on American audiences.