| Religion | Church of England |
| Occupation | Station manager |
| Address | Kensington Park, Adelaide, South Australia |
| Marital status | Single |
| Age at embarkation | 28 |
| Next of kin | Father, C E Owen Smyth, Kensington Park, South Australia |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | 2nd Lieutenant |
| Unit name | 10th Battalion, Headquarters |
| AWM Embarkation Roll number | 23/27/1 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board Transport A11 Ascanius on |
| Rank from Nominal Roll | Lieutenant |
| Unit from Nominal Roll | 10th Battalion |
| Fate | Killed in Action |
| Miscellaneous details (Nominal Roll) | *Spelt Trevor Owen-Smythe on NR |
| Place of burial | Beach Cemetery (Plot I, Row D, Grave No 10), Gallipoli, Turkey |
| Panel number, Roll of Honour, Australian War Memorial | 60 |
| Miscellaneous information from cemetery records | Commemorated in North Road Church of England Cemetery, Adelaide, South Australia. |
| Other details |
War service: Egypt, Gallipoli Medals: 1914-15 Star, British War Medal, Victory Medal |