| Character | First name |
| Jack's father | |
| Jack's mother | |
| Kate's father | |
| Kate's mother | |
| Locke's father | |
| Locke's mother | |
| Hurley's father | |
| Hurley's mother | |
| Charlie Pace's father | |
| Charlie Pace's mother | |
| Claire's father | |
| Claire's mother | |
| Ben's father | |
| Ben's mother | |
| Shannon's father | |
| Boone's mother | |
| Daniel's father | |
| Daniel's mother | |
| Charlotte's father | |
| Charlotte's mother | |
| Miles's father | |
| | Character | First name |
| Miles's mother | |
| Ethan's father | |
| Ethan's mother | |
| Walt's father | |
| Walt's mother | |
| Aaron's father | |
| Aaron's mother | |
| Clementine's father | |
| Clementine's mother | |
| Ji Yeon's father | |
| Ji Yeon's mother | |
| Sawyer's mother | |
| Ana Lucia's mother | |
| Michael's father | |
| Alex's father | |
| Alex's mother | |
| Christian's father | |
| Penny's father | |
| Baby Charlie's father | |
| Baby Charlie's mother | |
|