Roy Johnson may refer to:

Sport

• Roy Johnson (footballer) (1891–1962), Australian rules footballer
• Roy W. Johnson (coach) (1892–1989), American coach, athletic director, and faculty member of the University of New Mexico
• Roy Johnson (pitcher) (1895–1986), American baseball pitcher and coach
• Roy Johnson (1930s outfielder) (1903–1973), American baseball player
• Roy Johnson (boxer) (born 1948), Bermudian boxer
• Roy Johnson (1980s outfielder) (1959–2009), American baseball player
• Roy Johnson (trainer), thoroughbred trainer in the Canadian Horse Racing Hall of Fame

Others

• Roy W. Johnson (politician) (1882–1947), Lieutenant Governor of Nebraska from 1943 to 1947
• Roy P. Johnson (died 1963), American Associated Press telegrapher assigned to the Fargo Forum who published an extensive series of regional history articles
• Roy L. Johnson (1906–1999), American admiral and commander in chief of the United States Pacific Fleet
• Roy Lee Johnson (born 1938), American R&B and soul songwriter, singer and guitarist
• Roydel Johnson (born 1943), Jamaican musician, also known as Congo Ashanti Roy