| Rudolf Krefting | |
| Birth Date: | 3 February 1860 |
| Birth Place: | Kvikne, Norway |
| Death Date: | 17 August 1942 (aged 82) |
| Nationality: | Norwegian |
| Occupation: | Dermatologist |
| Children: | Kristian Krefting |
| Known For: | Studies of the chancroid and the coccobacillus haemophilus ducreyi |
Rudolf Waldemar Rømeling Krefting (3 February 1860 – 17 August 1942) was a Norwegian dermatologist. He was born in Kvikne. He is particularly known for his studies of the chancroid and the coccobacillus haemophilus ducreyi.[1] He was the father of Kristian Krefting.[2]