Rooma päevik (English: A Roman Diary) is a novel by Estonian author Karl Ristikivi.

The protagonist (i.e. the purported author of the diary) is called Kaspar von Schmerzburg ("Schmerz" being the German for pain).

After the author's literary mystification, it is a formerly unpublished volume of Tagebuch der Träume (Diary of Dreams) by Johann Friedrich Kaspar von Revingen, who was born in the manor of Tuivere in Estonia on February 9, 1718.

The Diary of Dreams was started in 1746 and includes twenty thick volumes, the first selection was printed in 1817, notes Ristikivi in the mock-scholarly afterword.

In the novel, the diarist Schmerzburg encounters a character hinted to be the historian Edward Gibbon who tells of his plan to write a book resembling The History of the Decline and Fall of the Roman Empire.