| Reg Allen | |
| Birthname: | Reginald Louvain Allen |
| Birth Date: | 1917 4, df=yes |
| Birth Place: | Wolverhampton, Staffordshire, England |
| Death Place: | Laguna Beach, California |
| Occupation: | Set decorator |
| Yearsactive: | 1963-1980 |
Reg Allen (12 April 1917 - 30 March 1989) was an American set decorator. He was nominated for an Academy Award in the category Best Art Direction for the film Lady Sings the Blues.[1]