Westpreussen may refer to:

• West Prussia - A former region of Germany
• Westpreussen (glider), A glider designed and built by Heinrich Hoffmann in Germany during 1927

• Richard Dumas
• Richard Dumbrill (cricketer)
• Richard Dunbar
• Richard Duncan Fraser
• Richard Duncan (Upper Canada politician)
• Richard Dundas
• Richard Dungworth
• Richard Dunthorne
• Richard du Pont
• Richard Durrant
• Richard Durst
• Richard Dutruel
• Richard Duwelius
• Richard D. Vanderberg
• Richard D. Wolff
• Richard D. Wood
• Richard Dworsky
• Richard D. Wyckoff
• Richard Dyer
• Richard Dyke Acland (missionary)
• Richard Dykstra
• Richard D’Oyly Carte
• Richard Earl Block
• Richard Earl Bush
• Richard Earnhart