| Name | Description | 
    | Oysters Rockefeller [1] | Appetizer consisting of oysters baked in spinnach, garlic, scallion and anchovy sauce [1] | 
  
    | Owon Eggs [2] | Delicacy prepared by Commander Riker for some of his shipmates. The humans present found the eggs to be highly unpalatable, but Lieutenant Worf pronounced them to be delicious. [2] | 
  
    | Osol Twist [3] | A Romulan confection with a tart flavour [3] | 
  
    | Oskoid [4] | Leaf like delicacy from Betazed. The sap of an Oskoid keeps it warm after it is picked. [4] | 
  
    | Orion Hurricane [5] | Or at least an approximation of it. Orion delaq wasn't available so an alternative was used. [5] | 
  
    | Orange Juice [6] | Juice of a large Terran fruit [6] Often served for breakfast on board the NX class USS Enterprise [7] | 
  
    | Onion Rings [8] | Terran food often served as a side dish [8] | 
  
    | Ongilin Caviar [9] | Made from fish eggs [9] | 
  
    | Olian guava [10] | A foodstuff which Neelix served aboard Voyager. He kept a few preserved and gave them to B'Elanna when the ship ran low on food whilst trapped in a subspace Void, justifying the special treatment on the basis that she was pregnant at the time. [10] | 
  
    | Oden [11] | Japanese dish. Every family has their own way of preparing it. [11] | 
  
    | Octopus [12] | Reed once claimed to love eating Octopus, especially the little suction cups, though he may have been joking. [12] | 
  
    | Oblissian Cabbage [13] | Vegetable grown in Voyagers airponics [13] | 
  
    | Oatmeal [14] | Earth breakfast dish. [14] Often eaten by Jake Sisko, who sometimes found it lumpy [15] |