| Ionawr | Chwef | Maw | Ebr | Mai | Meh | Gorff | Awst | Medi | Hyd | Tach | Rhag |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 |
30 |
31 |
Ar 31 Ionawr, ganwyd neu bu farw nifer o bobl bwysig i gynhyrchiad Doctor Who.
| Degawd | Blwyddyn | Person |
|---|---|---|
| 1910au | 1918 | Ganwyd John Crockett. |
| 1930au | 1937 | Ganwyd Davyd Harries. |
| 1960au | 1960 | Ganwyd Grant Morrison. |
| 1966 | Ganwyd Dexter Fletcher. | |
| 1968 | Ganwyd Matt King. | |
| 2000au | 2000 | Bu farw Leonard Grahame. |
| 2003 | Bu farw William Marlowe. | |
| 2008 | Bu farw Brian Langley. |