- Rhincalanus gigas
- Rhincalanus nasutus
- Rhizophysa eysenhardti
- Rhizophysa filiformis
- Rhizostoma pulmo
- Rhopalonema velatum
- Rhynchonerella angelini
- Rhynchonerella bongraini
- Rhynchonerella gracilis
- Rhynchonerella moebii
- Rhynchonerella petersi
- Ritteriella amboinensis
- Ritteriella retracta
- Rochinia confusa
- Rochinia gracilipes
- Rondeletiola minor
- Rosacea cymbiformis
- Rosacea plicata
- Russellia mirabilis
- Saccospyris antarctica
- Sagenoarium antarcticum
- Sagenoarium chuni
- Sagenoarium dicranon
- Sagenoscena irmingeriana
- Sagenoscena tetracantha
- Sagitella kowalewskii
- Sagitta bedoti
- Sagitta bierii
- Sagitta bipunctata
- Sagitta decipiens
- Sagitta enflata
- Sagitta ferox
- Sagitta friderici
- Sagitta gazellae
- Sagitta helenae
- Sagitta hexaptera
- Sagitta hispida
- Sagitta lyra
- Sagitta macrocephala
- Sagitta marri
- Sagitta maxima
- Sagitta megalophthalma
- Sagitta minima
- Sagitta neglecta
- Sagitta pacifica
- Sagitta planctonis
- Sagitta pulchra
- Sagitta regularis
- Sagitta robusta
- Sagitta serratodentata