Atlas of Battles

siege, major, medieval

Siege of Constantinople

Siege of Constantinople was a siege conducted in August 1422 at Constantinople, in what is now Turkey. It was part of the Byzantine–Ottoman War of 1421–1424, which ran from 1421 to 1424. The recorded result: Byzantine victory.

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Mediaeval map of Constantinople
Mediaeval map of Constantinople. Cristoforo Buondelmonti, Public domain, via Wikimedia Commons.
FoughtAugust 1422
WhereConstantinople, Turkey41.012N, 28.976E
OutcomeByzantine victory
BelligerentsByzantine EmpireagainstOttoman Empire
Part ofByzantine–Ottoman War of 1421–14241421 to 1424

Record

DateAugust 1422 (month precision)
to July 1422
PlaceConstantinople, Turkey
41.012N, 28.976E
KindSiege, medieval
Commanders
Siege of ConstantinopleSiege of ConstantinopleSiege of ConstantinopleSiege of ConstantinopleSiege of ConstantinopleSiege of ConstantinopleSiege of ConstantinopleSiege of ConstantinopleBursaAdapazarıİzmitTekirdağLüleburgazKırklareliBilecik100 km41.012N, 28.976E
The recorded site, with the nearest other engagements in the atlas. Present-day coastlines, rivers and borders; towns from Natural Earth.

The ground today

Relief of the ground around the site of Siege of Constantinople
Relief within about 10.0 km of the site, contours every 10 m. Copernicus DEM GLO-30, ESA.
Satellite view of the site of Siege of Constantinople today
The same ground from Sentinel-2 on 2025-07-22. Contains modified Copernicus Sentinel data 2025.

The recorded site stands at about 38 m; within 10.0 km the ground runs from -14 to 133 m, 147 m of relief, gently rolling country and today it is 57% water, 37% built-up, 4% tree cover.

water: 57%built-up: 37%tree cover: 4%water 57%built-up 37%tree cover 4%
west to east, 10.0 km0 to 70 mnorth to south, 10.0 km0 to 102 m
Elevation from the Copernicus DEM GLO-30 (ESA, Airbus); land cover from ESA WorldCover 2021 (CC BY 4.0), within about 5 km of the recorded site. Computed, not recorded.

Nearest engagements

Contested ground: this site was fought over 43 times between 510 BC and 1453.

Elsewhere in 1422

Siege of Constantinople is one of 720 engagements of the 15th century in the atlas and one of 622 in present-day Turkey.

Sources

Identity, coordinates, dates and the war from Wikidata Q700886, released under CC0. Result, belligerents, commanders, strength and casualties from the infobox of the English Wikipedia article Siege of Constantinople (1422), revision 1376674680, read 2026-11-14, licensed CC BY-SA 4.0; the article's text is not reproduced here. Present-day country and state from Natural Earth. Dates before 1582 follow the Julian calendar as recorded.