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| Grandma Tracy | |
|---|---|
| Thunderbirds character | |
 The classic puppet character | |
| First appearance | "The Uninvited" (2 December 1965) |
| Created by | Gerry and Sylvia Anderson |
| Voiced by | Christine Finn (original series) Sandra Dickinson (remake series) |
| In-universe information | |
| Occupation | Housekeeper and cook |
| Affiliation | International Rescue |
| Children | Jeff Tracy |
| Relatives |
|
| Home | Tracy Island |
| Nationality | American |
Grandma Tracy is a fictional character in the puppet television series Thunderbirds and its animated remake Thunderbirds Are Go. She is the mother of Jeff Tracy and the paternal grandmother of the Tracy brothers: Scott, John, Virgil, Gordon and Alan. The character was voiced by Christine Finn in the original series and Sandra Dickinson in the remake.