Which apostle was shipwrecked on Malta?

Answer: Paul

After the shipwreck they learned the island was called Malta; there a viper fastened on Paul's hand as he laid sticks on the fire.

“Once we were safely ashore, we learned that the island was called Malta. The islanders showed us extraordinary kindness. They kindled a fire and welcomed all of us because it was raining and cold. Paul gathered a bundle of sticks, and as he laid them on the fire, a viper, driven out by the heat, fastened itself to his hand.”— Acts 28:1-3 (BSB)