People with the last name O'Duffy in California
- Alice O'Duffy
- Dennis O'Duffy
- E O'Duffy
- Eugene O'Duffy
- G O'Duffy
- Gavin O'Duffy
- James O'Duffy
- Joan O'Duffy
- Karen O'Duffy
- Keiran O'Duffy
- Kelly O'Duffy
- Kenneth O'Duffy
- Larry O'Duffy
- Law O'Duffy
- Maureen O'Duffy
- Michael O'Duffy
- N O'Duffy
- Pat O'Duffy
- Patrick O'Duffy
- Richael O'Duffy
- Ry O'Duffy
- Shawn O'Duffy
- T O'Duffy
- Timothy O'Duffy
- Vivian O'Duffy
- William O'Duffy
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