Which European Countries Were Neutral In World War 2

European Neutrality During the Global Conflict

I've spent way too many hours untangling this topic on forums because people always ask it too simply. "Which European countries were neutral in World War 2" sounds like a straightforward list, but the reality is messier than most sources let on. I once spent three days tracking down primary sources on Portuguese neutrality after someone claimed Portugal was fully aligned with the Allies, when in fact they were running a careful balancing act that kept both sides supplied. Let me lay this out properly. The core list of genuinely neutral European states throughout the entire war is shorter than most people expect. Switzerland, Sweden, Ireland, Spain, Portugal, Turkey, Vatican City, Liechtenstein, and Andorra are the main ones. But calling them all "neutral" in the same sense obscures huge differences in what that actually meant on the ground. Spain is the most misunderstood case. Franco declared Spain neutral at the start, then shifted to "non-belligerent" in 1941 after meeting with Hitler. Spanish volunteers — the Blue Division — fought alongside the Germans on the Eastern Front against the Soviet Union. Yet Spain never formally joined the Axis, never allowed German forces on its territory, and kept trading wolfram (tungsten) with both sides. This isn't a contradiction. It's just what "neutral" looked like for a dictator who owed his regime to fascist support but knew his country couldn't survive another war. If you're researching this, any source that calls Spain simply "neutral" without qualification is being careless.

Turkey is another case that trips people up. They signed a non-aggression pact with Germany in 1941 and remained neutral until February 1945, when they finally broke diplomatic relations and then declared war — mostly as a formality to qualify for the United Nations. For the vast majority of the conflict, Turkey was neutrally positioned, letting the Germans use their railways for supplies to nowhere in particular, while also maintaining relations with the Allies. Their neutrality bought them time. Whether it was moral or pragmatic depends on who you ask. I've seen historians on both sides of that question, and honestly both make valid points. Sweden's neutrality was real but complicated. They allowed German troop transit through their territory early in the war — the so-called Permittenttrafiken — and supplied iron ore to Germany throughout the conflict, which was strategically vital. After 1943 the tone shifted and Sweden became more sympathetic to the Allies, even allowing refugee transit and eventually letting Allied forces use their territory. Again, "neutral" doesn't capture what happened here. It's more accurate to say Sweden practiced armed neutrality with pragmatic adjustments depending on the military situation. Switzerland is the textbook case. They mobilized fully, fortified the Alps, and made it brutally clear that an invasion would be costly. They accepted refugees, yes, but also turned many away at the border. Their banking system served all sides. The famous narrative about Swiss neutrality being absolute collapses under basic scrutiny, but they were never occupied and never compromised their sovereignty the way some smaller states might have if the Germans had bothered to press harder.

The micro-states are the easiest entries on any list but the hardest to discuss meaningfully. Andorra, Liechtenstein, and Vatican City were neutral in name only — too small and too insignificant to matter strategically. Monaco was technically neutral but effectively under Italian and then German control after 1942. San Marino declared neutrality but got bombed by the British in 1944 and was briefly occupied by German forces before being retaken by the Allies. None of these affected the war's trajectory in any material way. Here's the practical problem I keep seeing: people treat "neutral" as a single category when it really functioned as a spectrum. A country could be neutral in terms of formal declarations while actively trading with one side, harboring refugees from the other, or quietly sharing intelligence. Portugal under Salazar is a prime example — officially neutral the entire war, but leased airbases in the Azores to the Americans in 1943 after negotiations that ran parallel to continued tungsten sales to Germany. The dual-track diplomacy wasn't hidden. It was just poorly summarized in most secondary sources. If you're building a dataset or working on a project that requires clean classifications, I'd recommend separating "formally neutral," "non-belligerent," and "neutrality with significant compromises" into distinct categories. The raw number of neutral European countries depends entirely on how strict you are with the definition. Looser definitions include eight to ten states. Tighter definitions narrow it to roughly five or six. Both are defensible. Just be clear about which standard you're using, because I've lost track of how many times I've seen citations that contradict each other on exactly this point.