Diarists who wrote diaries concerning the Holocaust (1941-1945). English translations of some of these diaries are commercially available, for example Anne Frank's, Eva Heyman's, Janusz Korczak's.
- Janina Altman - a Jewish diarist in the Lwow Ghetto. Survived the Shoah and war.
- Nonna Bannister (1927 – 2004) - a Russian Jewish diarist who wrote diaries while working as a Ostarbeiter in Germany, along with her mother, Anna.
- Mary Berg
- Hélène Berr– a French diarist
- Eliszewa Binder
- Willy Cohn
- Miriam Chaszczewacki– a Polish diarist killed in the Radomsko ghetto
- Adam Czerniaków
- Arnold Daghani
- Helga Deen– wrote a diary in Herzogenbusch concentration camp (Camp Vught)
- Anne Frank– author of The Diary of a Young Girl
- Petr Ginz
- Zalman Gradowski
- Eva Heyman - a 13-year-old girl who kept a diary in Nagyvárad (now called Oradea), a Hungarian part of Romania, before murdered in Aushwitz
- Etty Hillesum– Dutch Jewish diarist and Holocaust victim; kept a diary in Amsterdam and in the Westerbork transit camp
- David Kahane
- Zelig Kalmanovich
- Victor Klemperer
- Věra Kohnová– Czech Jewish diarist
- David Koker– wrote a diary in Herzogenbusch concentration camp (Camp Vught)
- Janusz Korczak
- Herman Kruk
- Leib Langfus
- Rutka Laskier– Polish Jewish diarist and Holocaust victim
- Rywka Lipszyc
- Séndi Miller from Galanta, a Hungarian part of Slovakia. She was about 15 when deported to Auschwitz. She kept writing on scraps of paper and any other material she could find about her experiences and what she observed even in Auschwitz and a Nazi arms factory where she was a forced laborer
- Calel Perechodnik
- Sam Pivnik– Polish Jewish Holocaust survivor, author and memoirist
- Dawid Rubinowicz– Polish Jewish diarist and Holocaust victim
- Yitskhok Rudashevski
- Tanya Savicheva
- Mihail Sebastian
- Renia Spiegel– a Jewish diarist in Poland
- Shalom Yoran