| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Karl Gustaf Lennart•Lindroos |
| Used name | Lennart•Lindroos |
| Born | 23 February 1886 in Helsinki, Uusimaa (FIN) |
| Died | 26 July 1921 |
| Affiliations | Helsingin Uimaseura, Helsinki (FIN) |
| NOC | Finland |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1912 Summer Olympics | Swimming (Aquatics) | FIN |
Lennart Lindroos | |||
| 200 metres Breaststroke, Men (Olympic) | 4 h1 r2/3 | |||||
| 400 metres Breaststroke, Men (Olympic) | 4 h2 r2/3 |