According to Jagran Josh, here are the top seven longest wars in history — protracted conflicts that spanned centuries, reshaped empires, and left deep cultural impacts.

1. Iberian Religious War (Reconquista) – A 781-year struggle (711–1492) between Christian Iberian kingdoms and Muslim Moors, culminating in the fall of Granada.

2. Roman-Persian Wars – Intermittent battles between Roman/Byzantine and Parthian/Sassanian empires from 54 BC to 628 AD, lasting 682 years.

3. Anglo-Welsh Wars – Conflicts from around 800 to 1283, as English kingdoms vied for dominance over Welsh principalities (483 years).

4. Three Hundred and Thirty-Five Years’ War – A peculiar “war” between the Netherlands and the Isles of Scilly that lasted from 1651 to 1986, without major battles.

5. Hundred Years’ War – The famous England-France succession conflict (1337–1453), totalling 116 years.

6. Dutch-Portuguese War – A 60-year global colonial struggle (1601–1661) over trade routes and overseas territories.

7. Greco-Persian Conflicts – Series of wars between Greek city-states and the Persian Empire (499–449 BC), spanning 50 years.

These wars were seldom continuous — they comprised multiple phases, shifting alliances, and evolving political goals. Their long durations reflect how ideology, power, religion, and geography sustained conflict across generations, ultimately shaping national boundaries and cultural identities.