Paulo Dias may refer to:

• Paulo Dias de Novais (1510–1589), nobleman of the Royal Household and Portuguese colonizer of Africa
• Paulo Dias (soccer) (born 1944), retired professional Brazilian football (soccer) goalkeeper

• Variable Darner
• Variable decelerations
• Variable density goggles
• Variable Density Tunnel (Langley, Virginia)
• Variable dot thermal printer
• Variable Dwarf Kingfisher
• Variable Dwarf-kingfisher
• Variable electro-precipitator
• Variable Electro Precipitator
• Variable elimination
• Variable Energy Cyclotron Center
• Variable extent
• Variable flatsedge
• Variable-free
• Variable frequency transformer
• Variable function (4DOS)
• Variable function (4NT)
• Variable function (4OS2)
• Variable function (JP Software)
• Variable geometry turbocharger
• Variable geometry turbomachine
• Variable Geo Neo
• Variable goshawk
• Variable Grass Mouse
• Variable Groundsel