| Ole Siggaard-Andersen | |
| Birth Date: | 10 December 1932 |
| Fields: | Medicine, physiology |
| Known For: | Acid-base theory |
Ole Siggaard-Andersen (born 10 December 1932) is a Danish physician clinical chemist who elucidated much acid base physiology. He jointly invented the concepts of base excess and standard base excess.[1]
His doctoral thesis, The Acid-Base Status of the Blood, was published as a book for five editions and in five languages.[2] He was honored by the American Association for Clinical Chemistry who awarded him the Edwin F. Ullman Award in 2003.