| Julien Lootens | |
| Fullname: | Julien Lootens |
| Nickname: | Samson |
| Birth Date: | 1876 8, df=yes |
| Birth Place: | Wevelgem, Belgium |
| Death Place: | Brussels, Belgium |
| Discipline: | Road |
| Role: | Rider |
| Proyears1: | 1903 |
| Proteam1: | Brennabor |
| Proyears2: | 1904 - 1905 |
| Proteam2: | JC Cycles |
| Proyears3: | 1906 |
| Proteam3: | Samson Cycles |
| Proyears4: | 1911 |
| Proteam4: | Alcyon - Dunlop |
| Proyears5: | 1913 |
| Proteam5: | La Française |
Julien Lootens (2 August 1876 – 5 August 1942) was an early twentieth century Belgian cyclist who participated in the 1903 Tour de France and finished seventh. He was a professional cyclist between 1901 and 1921.