* Andrew Ainslie Common ( 1841 – 1903 ), built his own very large reflecting telescopes and demonstrated that photography could record astronomical features invisible to the human eye.

* 1903 – Mickey Cochrane, American baseball player ( d. 1962 )

* 1903 – Harold Edgerton, American electrical engineer ( d. 1990 )

* 1903 – Jan Tinbergen, Dutch economist, recipient of the Bank of Sweden Prize ( d. 1994 )

* 1903 – Ferenc Keserű, Hungarian water polo player ( d. 1968 )

* 1819 – Sir George Stokes, 1st Baronet, Irish-English mathematician and physicist ( d. 1903 )

After what the MCC saw as the problems of the earlier professional and amateur series they decided to take control of organising tours themselves, and this led to the first MCC tour of Australia in 1903 – 04.

* 1903 – Fall of the Ottoman Empire: an unsuccessful uprising led by the Internal Macedonian Revolutionary Organization against Ottoman Turkey, also known as the Ilinden – Preobrazhenie Uprising, takes place.

In Serbia Nikola Pašić ( 1845 – 1926 ) and his Radical Party dominated Serbian politics after 1903 ; they also monopolized power in Yugoslavia from 1918 to 1929 ; during the dictatorship of the 1930s, it furnished the prime minister.

* 1903 – Macedonian rebels in Kruševo proclaim the Kruševo Republic, which exists only for 10 days before Ottoman Turks lay waste to the town.

* 1903 – Habib Bourguiba, Tunisian politician ( d. 2000 )

* 1903 – Louis Leakey, Kenyan-English archaeologist ( d. 1972 )

* 1903 – A 30 million cubic-metre landslide kills 70 in Frank, Alberta, Canada.

* 1876 – Alexander I of Serbia ( d. 1903 )

* Adrian ( costume designer ) ( 1903 – 1959 ), born Adrian Adolph Greenberg, costume designer for over 250 films

* Adrian Rollini ( 1903 – 1956 ), American multi-instrumentalist best known for his jazz music

* 1903 – German engineer Karl Jatho allegedly flies his self-made, motored gliding airplane four months before the first flight of the Wright brothers.

* 1903 – James Gould Cozzens, American novelist ( d. 1978 )

* 1903 – Lewis Sargent, American actor ( d. 1970 )

* 1826 – Karl Gegenbaur, German anatomist ( d. 1903 )

* 1903 – Arpad Elo, American chess player, created the Elo rating system ( d. 1992 )

Alexander I or Aleksandar Obrenović ( Cyrillic: Александар Обреновић ; 14 August 1876 – 11 June 1903 ) was king of Serbia from 1889 to 1903 when he and his wife, Queen Draga, were assassinated by a group of Army officers, led by Colonel Dragutin Dimitrijević

The Kishinev pogrom took place in the capital of Bessarabia on April 6, 1903 after local newspapers published articles inciting the public to act against Jews ; 47 or 49 Jews were killed, 92 severely wounded and 700 houses destroyed.

A large anti-Semitic riot took place in the town on 6 – 7 April 1903, which would later be known as the Kishinev pogrom.

In 1903, the theater was the site of a fundraiser by the Chinese community for Jewish victims of a massacre in Kishinev.

Significant pogroms in the Russian Empire included the Odessa pogroms, Warsaw pogrom ( 1881 ), Kishinev pogrom ( 1903 ), Kiev Pogrom ( 1905 ) and the Białystok pogrom ( 1906 ).

In response to the Kishinev pogrom in 1903 President Theodore Roosevelt and Secretary of State John Hay met with B ' nai B ' rith's executive committee in Washington, D. C. B ' nai B ' rith President Simon Wolf presented the draft of a petition to be sent to the Russian government protesting the lack of opposition to the massacre.

After the Kishinev pogrom of 1903, Jabotinsky joined the Zionist movement, where he soon became known as a powerful speaker and an influential leader.

Violence against the Jews in the Kishinev pogrom in 1903 was continued after the 1905 revolution by the activities of the Black Hundreds.

In the wake of the Kishinev pogrom, Adler went back briefly to Eastern Europe in summer 1903, where he tried to convince various family members to come to America.

Adler in his memoir gives an account that when he went back in Europe in 1903 in the wake of the Kishinev ( Chişinău ) pogrom, in an unsuccessful attempt to convince some of his family to join him in the United States, he encountered Rosenberg as a street beggar and unsuccessfully attempted to give him money.

* 1903: Chişinău ( then known as Kishinev ), in Russian Bessarabia had a Jewish population of 50, 000, or 46 %, out of a total of approximately 110, 000.

February 16, 1903: Kishinev pogrom.

In 1903, a young Christian Russian boy, Mikhail Ribalenko, was found murdered in the town of Dubossary ( Dubăsari in Romanian ), about 25 miles north-east of Kishinev ; the town is situated on the left bank of the river Dniester, and formally was not a part of Bessarabia.

In 1903, soon after the Kishinev pogrom, an additional group from Bessarabia was organized.

She immigrated to the United States with her family in 1903, following a pogrom in Kishinev.

Krushevan was reported as being one of initiators of the Kishinev pogrom in April 1903.

The party collapsed in 1903 following the Kishinev pogrom.

Most of Horowitz's plays were historical, but he also wrote " zeit piessen " on topical subjects, such as a play about the Homestead Strike of 1892, one about a 1903 pogrom in Chişinău, and a distinctly socialist take on the 1889 Johnstown flood written while working with Boris Thomashefsky in Chicago.

Later on, there was anti-Semitic unrest in the beginning of 20th century, with first pogrom in Zabolotiv in 1903.

Lerner was born on October 28, 1903 in Bessarabia ( Russian Empire ).