| Official Name: | St. Margarets Bay |
| Settlement Type: | Administrative District |
| Pushpin Map: | Canada Nova Scotia |
| Pushpin Map Caption: | Location within Nova Scotia |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Halifax Regional Municipality |
| Parts Type: | Communities |
| Parts Style: | para |
| P1: | Black Point |
| P2: | Boutiliers Point |
| P3: | French Village |
| P4: | Glen Haven |
| P5: | Glen Margaret |
| P6: | Hackett's Cove |
| P7: | Head of St. Margaret's Bay |
| P8: | Hubbards |
| P9: | Hubley |
| P10: | Indian Harbour |
| P11: | Ingramport |
| P12: | Lewis Lake |
| P13: | Peggys Cove |
| P14: | Queensland |
| P15: | Seabright |
| P16: | Simms Settlement |
| P17: | Tantallon |
| P18: | Upper Tantallon |
| Leader Title: | Council |
| Leader Name: | Western Region Community Council |
| Established Title: | Founded |
| Established Date: | 1612 (Head of St. Margarets Bay) |
| Population As Of: | 2006 |
| Timezone: | AST |
| Utc Offset: | −4 |
| Timezone Dst: | ADT |
| Utc Offset Dst: | −3 |
| Coordinates: | 44.6444°N -63.6762°W |
| Area Code: | 902 |
| Footnotes: | Part of a series about Places in Nova Scotia |
St. Margaret's Bay is the westernmost administrative planning district of the Halifax Regional Municipality in the Canadian province of Nova Scotia.
It is a rural area located on the southwestern part of Halifax County comprising those communities in the county located on the eastern and northern shores of St. Margaret's Bay through to the county line, terminating at the community of Hubbards. It borders on Hants County to the north and on Lunenburg County to the west.[1]