Nelsinho may refer to:

• Nelsinho Baptista (born 1950), former Brazilian football right back.
• Nelson Angelo Piquet, NASCAR Camping World Truck Series driver, a son of Nelson Piquet.
• Nelsinho (footballer, born 1979), Portuguese footballer.
• Nelsinho (footballer, born 1988), Brazilian footballer

• Trials of Death
• Trials of Fiji coup of 2000
• Trials Of Henry Kissinger
• Trials of Life
• Trials of Obi-Wan
• Trials of Saddam Hussein
• Trials of shazam
• Trials of Shazam!
• Trials of War Criminals before the Nuremberg Military Tribunals
• Trial (sport)
• Trials since the 2000 Fijian coup d'état
• Trials since the Fiji coup of 2000
• Trials & Tribulations (Bizzy Bone album)
• Trials unicycling
• Trial (The Adventures of Batman & Robin)
• Triamcinolon
• Triamcinolone Acetonide
• Triameter
• Triamine
• Triaminotrinitrobenzene
• Tri-amping
• Triamterine
• Triamudom
• Triam udom suksa
• Triam Udom Suksa School