Bozhidar Dimitrov Stoyanov (Bulgarian: Божидар Димитров Стоянов, born 3 December 1945) is a Bulgarian historian working in the sphere of Medieval Bulgarian history, the Ottoman rule of Bulgaria and the Macedonian Question. He is the director of the National Historical Museum, formerly a Bulgarian Socialist Party member, and currently a politician affiliated with the GERB political party.
Born in Sozopol to a family of Bulgarian refugees from Eastern Thrace (now part of Turkey), he was given access to the Vatican Secret Archives in the 1980s, regarded as a great achievement considered the political situation of the time. As the director of the National Historical Museum, he had an indirect conflict in 1997–1998 with the President Petar Stoyanov regarding whether to return the Istoriya Slavyanobolgarskaya rough copy to the Zograf Monastery or leave it in Bulgaria.
Being a member of the Supreme Party Council of BSP, he declared himself openly against the party in 2005 by not supporting BSP Mayor of Sofia candidate Tatyana Doncheva and instead favouring the independent Boyko Borisov. Because of this he was taken down from the post of BSP municipal councillors leader in Sofia. Before the 2009 Bulgarian parliamentary election, Dimitrov formally left BSP and joined Borisov's GERB. He was the party's proportional vote candidate for Burgas Province and won the election with 35.92% ahead of Volen Siderov.
Dimitrov is the author of 30 treatises and over 250 articles and papers in the sphere of his research, as well as several books (including The Ten Lies of Macedonism and Twelve Myths in Bulgarian History). He has specialized in palaeography in Paris and also hosts the patriotic history-related Pamet Balgarska (Bulgarian Memory) show on Kanal 1.
The Ten Lies of Macedonism 
Bozhidar Dimitrov's book, The Ten Lies of Macedonism (2000, 2003 and 2007), is a polemical statement, based on historical documents, and is openly against the ideology of "Macedonism", i.e. the form of ethnic Macedonian nationalism that asserts an allegedly "deep-rooted ethnic and cultural distinction" between ethnic Macedonians and Bulgarians. The book has caused considerable controversy and criticism from ethnic Macedonian sources. Dimitrov claims that it has reached best-seller status in the Republic of Macedonia. The "10 lies" described by Dimitrov are:
Third lie: medieval figures like Saints Cyril and Methodius were ethnic Macedonians.
Fifth lie: the Archbishopric of Ohrid was a "Macedonian" church.
Sixth lie: the Bulgarian Exarchate conquered the ethnic Macedonian people.
Seventh lie: early 20th-century revolutionary movements such as the Internal Macedonian Revolutionary Organization (IMRO) worked for a "Macedonian" national goal.
Eighth lie: that Krste Misirkov is the number 1 ethnic Macedonian of the 20th century.
Ninth lie: the "heroic struggle of the Macedonian people against Bulgarian occupiers in 1941-1944".
Tenth lie: on the rejoicing of the Macedonian people for their second inclusion in Yugoslavia in 1944 and the 250,000 ethnic Macedonians in Bulgaria. 
- Bozhidar Dimitrov. The True History of Liberation 1860–1878. Sofia: Standart News Ltd., 2010. 183 pp. ISBN 978-954-92377-9-5 (First edition in 2006, ISBN 978-954-91652-5-8.) (Bulgarian)
- Bozhidar Dimitrov, co-author. Bulgarian Policies on the Republic of Macedonia: Recommendations on the development of good neighbourly relations following Bulgaria’s accession to the EU and in the context of NATO and EU enlargement in the Western Balkans. Sofia: Manfred Wörner Foundation, 2008. 80 pp. ISBN 978-954-92032-2-6 (Trilingual publication in Bulgarian, Macedonian and English)
- Bozhidar Dimitrov. The Ten Lies of Macedonism. Sofia: Kom Foundation, 2007. 107 pp. ISBN 978-954-91652-9-6 (First edition in 2000 in Bulgarian, ISBN 978-954-90700-1-9.)
- Bozhidar Dimitrov. Macedonia – Holy Bulgarian Land: Who Are the Successors of Alexander the Great and Roxana? Sofia: Kom Foundation, 2007. 80 pp. ISBN 978-954-8745-06-2 (Bulgarian)
- Bozhidar Dimitrov. Seven Ancient Civilizations in Bulgaria: With Maps & Color Illustrations. Sofia: Kom Foundation, 2006. 112 pp. ISBN 978-954-9464-07-8
- Bozhidar Dimitrov. 12 Myths in Bulgarian History. Sofia, Kom Foundation, 2005. 148 pp. ISBN 978-954-91652-1-0 (Bulgarian)
- Bozhidar Dimitrov. Bulgarians: The First Europeans. Sofia: St. Kliment Ohridsky University Press, 2002. 108 pp. ISBN 978-954-07-1758-6
- Bozhidar Dimitrov. Bulgaria and the Vatican. Sofia: Bulgarian Diplomatic Review, 2002. 56 pp. ISBN 978-954-91062-4-4
- Bozhidar Dimitrov. The Bulgars and Alexander of Macedon. Sofia: Tangra Publishers, 2001. 138 pp. ISBN 954-9942-29-5 (Bulgarian)
- Bozhidar Dimitrov. Venetian Documents on Bulgarian History During the 16th and 17th Century. Sofia: Borina Ltd., 1994. ISBN 978-954-500-036-2 (Bulgarian)
- Georgieva, Kapka (31 December 2002). "Bulgaria won't perish as long as there's even a single Bulgarian alive" (in Bulgarian). Pravoslavieto.com. Retrieved 2006-06-26.
- Parvanova, Lyudmila (21 September 2003). "Bozhidar Dimitrov — A Bulgarian Reborn" (in Bulgarian). Standart News. Retrieved 2006-06-26.
- "Biographies: Bojidar Dimitrov". Republic of Bulgaria Council of Ministers. Retrieved 2009-09-05.
- "ГЕРБ печели в Бургас, Божидар Димитров — мажоритарен депутат" (in Bulgarian). Burgas News. 2009-07-06. Retrieved 2009-07-25.[dead link]
- Interview with Bozhidar Dimitrov (Bulgarian)
- The Macedonian language version is also freely available online.