| Name | Address | City | Years | |
| The Oyster Bar | 119 Yorkville Avenue | Toronto | (Opened 1961 ; Closed) | |
| Oyster Boy | 872 Queen Street W. | Toronto | (2001 - ) | |
| Oyster Club | 13 Water Street | Mystic | (2011 - ) | |
| The Oyster Club | 43 Temple Street | Birmingham | (2019 - ) | |
| Oyster House | 1516 Sansom Street | Philadelphia | (2009 - ) | |
| Oyster Oyster | 1440 8th Street NW | Washington | (2020 - ) | |
| Oystercatcher Seafood Bar & Grill | 104 Manson Road 110 Purvis Lane | Salt Spring Island | ||
| Oysters Restaurant | 2515 East Coast Highway | Corona del Mar | (1989 - 2010) | |
| Oysters Too | 876 East Falmouth Highway | East Falmouth | (1992 - ) | |
| Oz | 5429 Lyndon B Johnson Freeway | Dallas | (Opened 1974 ; Closed) | |
| Oz Kafe | 361 Elgin Street 10 York Street | Ottawa | (2004 - 2016 ; 2017 - ) | |
| Ozumo | 161 Steuart Street | San Francisco | (2001 - ) | |
| Ozumo | 2251 Broadway | Oakland | (2008 - 2016) | |
