Opihi or Ōpihi may refer to:

Cellana, sea snails known as ‘opihi in Hawaiian. Opihi, New Zealand Ōpihi River, Canterbury, New Zealand Ōpihi Whanaungakore, a Māori burial ground near Whakatāne, New Zealand Opihi Pickers, Hawaiian reggae group Opihi College, secondary school in Temuka, New Zealand