Books about Historical fiction (sorted alphabetically)
- Old Mortality, Complete Walter Scott
- Old Mortality, Volume 1. Walter Scott
- Old Mortality, Volume 2. Walter Scott
- Old Ninety-Nine's Cave Elizabeth H. Gray
- Old Saint Paul's: A Tale of the Plague and the Fire William Harrison Ainsworth
- Onnen aalloissa: Historiallisia kertomuksia (Finnish) Santeri Ivalo
- Onnen kannel: Historiallinen kertomus (Finnish) Hilda Huntuvuori
- On the Face of the Waters: A Tale of the Mutiny Flora Annie Webster Steel
- On the red staircase Mary Imlay Taylor
- O Pioneers! Willa Cather
- O Pioneers! Willa Cather
- Orange and Green: A Tale of the Boyne and Limerick G. A. Henty
- Oswego-joella: "Tienviitan" seikkailuja, intiaanikertomus (Finnish) James Fenimore Cooper
- Our Lady of Darkness Bernard Capes
- Our Little Lady Emily Sarah Holt
- outlaw of Torn Edgar Rice Burroughs
- outlaw of Torn Edgar Rice Burroughs
- Over the Border: A Romance Robert Barr
- Paavo Nissinen: Kuvaelmia viimeisestä Suomen sodasta (Finnish) G. H. Mellin
- Pan Michael: An Historical Novel of Poland, the Ukraine, and Turkey Henryk Sienkiewicz
- Paolo Pelliccioni, Volume 1 (of 2) (Italian) Francesco Domenico Guerrazzi
- Paolo Pelliccioni, Volume 2 (of 2) (Italian) Francesco Domenico Guerrazzi
- Pariisin Notre-Dame 1482 (Finnish) Victor Hugo
- Parson Kelly Andrew Lang and A. E. W. Mason
- Pasquale Paoli; ossia, la rotta di Ponte Nuovo (Italian) Francesco Domenico Guerrazzi