Lynceus or Lynkeus may refer to:

• Lynceus of Samos, Greek writer
• Josef Popper-Lynkeus (1838-1922), Austrian scholar and inventor
• Lynceus, name of multiple Greek mythological figures.
• Lynceus (genus), a crustacean genus

• Paraguay at the Olympics
• Paraguay at the Pan American Games
• Paraguay Basin
• Paraguay-Brazil relations
• Paraguay (cheese)
• Paraguay cheese
• Paraguay Cheese
• Paraguay currency
• Paraguay fed cup team
• Paraguay First Division
• Paraguay lignum vitae
• Paraguay men's national under-20 football team
• Paraguay men's national volleyball team
• Paraguay national football team 2010
• Paraguay national futsal team
• Paraguay national soccer team
• Paraguay nightshade
• Paraguayo
• Paraguayos, Republica o Muerte
• Paraguayos, República o Muerte
• Paraguay-Peru relations
• Paraguay-Republic of China relations
• Paraguay rivers
• Paraguay-Russia relations
• Paraguay-South Korea relations