Ronaldão can refer to:

• Ronaldo Rodrigues de Jesus, a Brazilian footballer
• Ronaldão (stadium), a football stadium in Poços de Caldas, Brazil

• Liriomyza nigriscutellata
• Liriomyza ptarmicae
• Liriomyza sativae
• Liriomyza schmidti
• Liriomyza septentrionalis
• Liriomyza smilacinae
• Liriomyza taraxaci
• Liriomyza trifoliearum
• Liriomyza trifolii
• Liriomyza venegasiae
• Liriope (jellyfish)
• Lirios
• Liris argentatus
• Liris (insect)
• Liris partitus
• Liris Sol Velásquez
• Li River (Guangxi)
• Lirnyks
• Liroa emodensis
• L.I. Roe House
• Liromoba
• Liromoba (Vidhan Sabha constituency)
• Li Rong (later Tang dynasty author)
• Li-rong Zhang
• Liron Shapira