Sidney Brown

Sidney or Sydney Brown may refer to:
 * Sidney Brown (electrical engineer) (1873–1948), British electrical engineer and inventor
 * Sidney Brown (footballer), English soccer goalkeeper
 * Sidney Brown (accordion maker) (1906–1981), Cajun accordion maker
 * Omen (record producer) (Sidney Brown, born 1976), Harlem music producer
 * Sydney MacGillvary Brown (1895–1952), American World War I flying ace, author and professor of medieval history
 * Sydney Brown (sport shooter) (1873–1945), Canadian Olympic sport shooter
 * Sydney Brown (American football) (born 2000), American football player