Natural History or (in Latin) Naturalis Historia may mean:
- Natural history, the natural sciences
- Naturalis Historia , an encyclopedic work by Pliny the Elder (1st century)
- Natural History (Lonitzer), Adam Lonitzer's Natural History (16th century)
- Robert Sibbald's Naturalis Historia Scotiae , also known as Scotia Illustrata sive Prodromus Historiae Naturalis (1684)
- ''Natural History'' (magazine), a magazine on science and nature
- ''Natural History'' (novel), a 1992 novel by American writer Maureen Howard
- ''Natural History'' (I Am Kloot album), an album released in 2001 by I Am Kloot
- A Natural History Group, which is often referred to as a trial's "third arm", is the name given to the group of subjects in a drug trial that receive no treatment of any kind whatsoever – and, therefore, their condition is left to run its "natural" course – and the observed outcomes with this group are compared with the outcomes manifested by a group that has been given the active drug, and that manifested by another group who have been given a dummy, * _placebo* _ drug (thus, the "third arm").
Inflected Latin forms of the title, such as Naturalis Historiae (genitive case) may also be found.