Steven Douglas Merryday (born November 2, 1950) is a United States district judge of the United States District Court for the Middle District of Florida. During the COVID-19 pandemic, Merryday issued rulings that blocked the CDC from enforcing its public health rules regarding cruise ship operations and blocked the Navy from removing an insubordinate commander of a $1.8 billion warship who refused to comply with COVID-19 precautions and exposed others to COVID-19 while experiencing symptoms.