78 notable events from 1915.
- Armenian genocide
Apr 24, 1915–1923 · Türkiye
- Sankebetsu brown bear incident
Dec 9, 1915–Dec 14, 1915 · Japan
- Sinking of the RMS Lusitania
May 7, 1915 · Ireland
- Sayfo
Jan 1915–1919 · Kuwait
- Leo Frank
Aug 17, 1915 · United States
- Henri Désiré Landru
Jan 1, 1915–Jan 13, 1919 · France
- Quintinshill rail disaster
May 22, 1915 · United Kingdom
- National Protection War
Dec 25, 1915–Jul 14, 1919 · China
- 1915 Avezzano earthquake
Jan 13, 1915 · Italy
- Defense of Van (1915)
Apr 19, 1915–May 17, 1915 · Türkiye
- Deportation of Armenian intellectuals on 24 April 1915
Apr 24, 1915 · Türkiye
- 1915 Singapore Mutiny
Feb 15, 1915–Feb 22, 1915 · Singapore
- Austro-Hungarian occupation of Serbia
Nov 1915–Nov 1918 · Serbia
- Musa Dagh
Sep 12, 1915 · Türkiye
- Shell Crisis of 1915
1915 · —
- Bombardment of Ancona
May 23, 1915–May 24, 1915 · Italy
- Jungle Movement of Gilan
Oct 1915–Jun 5, 1920 · Iran
- Bulgarian occupation of Serbia (World War I)
Nov 1915–Nov 1918 · Serbia
- Baralong incidents
Sep 24, 1915 · United Kingdom
- Mafia–Camorra War
1915–1917 · United States
- Battle of Broken Hill
Jan 1, 1915 · Australia
- Lyda Southard
Jan 1, 1915–Jan 1, 1920 · —
- 1915 genocide in Diyarbekir
1915 · Türkiye
- Tapani incident
1915 · Taiwan
- Ghadar Mutiny
Feb 1915 · India
- 1915 British football match-fixing scandal
1915 · —
- Kelantan rebellion
Apr 29, 1915–May 24, 1915 · Malaysia
- Laurel Run mine fire
from Dec 6, 1915 · United States
- Thrasher incident
Mar 28, 1915 · Ireland
- May 14 Revolt
May 14, 1915 · Portugal
- Chilembwe uprising
Jan 1915 · Malawi
- Temporary Law of Deportation
Jun 1, 1915 · —
- Surdulica massacre
1915–1916 · Serbia
- Guadalajara train disaster
Jan 22, 1915 · Mexico
- Štip massacre
Oct 26, 1915 · North Macedonia
- Battle of Musa Dagh
Jul 1915–Sep 12, 1915 · Türkiye
- Defense of Azakh
Aug 18, 1915–Nov 21, 1915 · Türkiye
- New York Ripper murders
1915 · United States
- Urfa resistance
Sep 29, 1915–Oct 20, 1915 · Türkiye
- Battle of the Wazzir
Apr 2, 1915 · Egypt
- Koishikawa seven-person slashing incident
Mar 15, 1915 · Japan
- 1915 Sinhalese-Muslim riots
May 28, 1915–Aug 30, 1915 · Sri Lanka
- Bussa rebellion
Jun 1915 · Nigeria
- St. John's School fire
Oct 28, 1915 · United States
- Kato Ro incident
1915 · Japan
- 1915 Vanceboro international bridge bombing
Feb 2, 1915 · United States
- 1915 uprising in Karbala
Jun 27, 1915 · Iraq
- Lynching of Cordella Stevenson
Dec 15, 1915 · United States
- 20 Hunchakian gallows
Jun 15, 1915 · Türkiye
- Murders of Beernem
1915–1944 · Belgium
- Raid on Norias Ranch
Aug 8, 1915 · United States
- Shabin-Karahisar uprising
Jun 2, 1915–Jun 30, 1915 · Türkiye
- Bombing of London on 8 September 1915
Sep 8, 1915 · United Kingdom
- Leopoldine Kasparek
Jan 1, 1915–Jan 1, 1916 · —
- 1915 Pleasant Valley earthquake
Oct 3, 1915 · United States
- Mistake Creek massacre
Mar 28, 1915 · Australia
- Khalifa Ben Asker's revolt
Jan 1915–Oct 1918 · Libya
- Weedon rail crashes
Aug 14, 1915 · United Kingdom
- 1915 Imperial Valley earthquakes
Jun 22, 1915 · United States
- Ojo de Agua Raid
Oct 21, 1915 · United States
- St Bedes Junction rail crash
Dec 17, 1915 · United Kingdom
- Lynching of James and Alonzo Green
Jul 4, 1915 · United States
- Raid on Lowca and Parton
Aug 16, 1915 · United Kingdom
- 1915 Ilford rail crash
Jan 1, 1915 · United Kingdom
- 1915 Vancouver bridge arson attack
Apr 29, 1915 · Canada
- Fusillés de Flirey
Apr 20, 1915 · France
- Sadiavahy Rebellion
1915–1917 · Madagascar
- Hvalen incident
Oct 21, 1915 · Sweden
- Battle of Sam Khubis
Aug 5, 1915 · Namibia
- 1915 Asmara earthquake
Sep 23, 1915 · Eritrea
- Sassoun self-defense (1915)
Aug 1, 1915 · —
- 1915 Ocean Park pier fire
Dec 27, 1915 · China
- 1915 Kachin Hills uprising
Feb 1, 1915 · Myanmar
- Siberian wildfires (1915)
Aug 1, 1915 · Russian Federation
- Bentschen rail accident
Dec 28, 1915 · Poland
- Dietikon rail accident
Aug 17, 1915 · Switzerland
- Mezőlaborcz train collision
Sep 26, 1915 · Slovakia
- Sauj Bulaq massacre (1915)
Jan 1, 1915 · Iran