The first siege of Vienna fails
Suleiman reaches the Habsburg capital itself, but an early winter and stretched supply lines force an Ottoman retreat.
Quick facts
- Sultan
- Suleiman I
- Target
- Vienna, Habsburg capital
- Date
- Autumn 1529
- Result
- Ottoman withdrawal; no city taken
What happened
Three years after Mohacs, Suleiman marched on Vienna itself, the Habsburg capital, putting the city under siege in the autumn of 1529. The Ottoman army had overwhelming numbers, but an early onset of winter weather and the strain of supplying a large army so far from Ottoman territory undermined the siege before the city's defenses could be broken. Suleiman was forced to withdraw without taking the city, and a follow-up campaign in 1532 also produced no decisive result, leaving a costly standoff on the empire's western frontier.
Why it matters
The failed siege marked the practical limit of Ottoman expansion into Central Europe by land, a boundary that held for over a century and a half until the second siege of Vienna in 1683 tested it again. It shifted Suleiman's later campaigns eastward against the Safavids instead, where Ottoman forces took Baghdad in the mid-1530s.
How we know
World History Encyclopedia's biography of Suleiman the Magnificent places the siege in 1529 in its chronology of his reign and notes the follow-up 1532 campaign's mixed results and the stalemate that followed on the western frontier.
Sources
- World History Encyclopedia. Suleiman the Magnificent · Reputable sourceworldhistory.org · The domain "worldhistory.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
- World History Encyclopedia. Battles & Conquests Of The Ottoman Empire (1299-1683) · Reputable sourceworldhistory.org · The domain "worldhistory.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
See something wrong? . Corrections with a source get fixed fastest.
Part of a timelineThe Ottoman Empire31 events · A frontier warband on the edge of Byzantium grows into a 600-year empire spanning three continents, then dissolves into a modern republic.View all →