C. lagunensis may refer to:

• Caldisphaera lagunensis, an Acidilobale in the Caldisphaeraceae family
• Canna lagunensis, a garden plant
• Cicindela lagunensis, a tiger beetle

• Chickweed baby's-breath
• Chickweed Willowherb
• Chicle family
• Chiclete com banana (song)
• Chiclet rule
• Chiclet test
• Chico 30
• Chico Air Museum
• Chico Alencar
• Chico (Amtrak station)
• Chico Arnez
• Chico Aura Dwi Wardoyo
• Chico babies
• Chico Banza
• Chicobolus
• Chicobolus spinigerus
• Chico Bon Bon: Monkey with a Tool Belt
• Chico Buarque de Hollanda (1966 album)
• Chico Chen
• Chicochoerus
• Chico City Rangers FC
• Chico Diabo
• Chico El Luchador
• Chico Flores
• Chico (footballer, born 1987)