Sully H. W. Bush is a Labrador Retriever employed as a service dog for disabled military veterans in the United States. He served with the former president of the United States, George H. W. Bush, during the last six months of his life, ending with Bush's death on November 30, 2018. He received international attention for his role during Bush's state funeral.

The Labrador Retriever or simply Labrador is a British breed of retriever gun dog. It was developed in the United Kingdom from St. John's water dogs imported from the colony of Newfoundland, and was named after the Labrador region of that colony. It is among the most commonly kept dogs in several countries, particularly in the European world.