Which countries have 24 hours of daylight?

Norway: Svalbard archipelago, experiences 24 hours of daylight from late April to late August.

Sweden: Lapland region, 24 hours of daylight from late May to late July.

Finland: Lapland region, 24 hours of daylight from late May to late June.

Iceland: 24 hours of daylight from late May to late June.

Greenland: 24 hours of daylight from late April to late August.