Duder may refer to:
People Albert Duder (1856–1936), New Zealand mariner and harbourmaster Charles Duder (1819–1879), Newfoundland merchant and politician Tessa Duder (born 1940), New Zealand author and former swimmer Thomas C. Duder (1850–1912), Newfoundland merchant and politician
Fictional character
"The Dude" or "The Duder", from the movie The Big Lebowski
Places Duder, Iran, in Fars Province, Iran Duders Beach or Umupuia Beach, in Auckland, New Zealand Duder Regional Park, a park in Auckland, New Zealand