Falkland Islands (Islas Malvinas) is around the same size as Gambia.

Gambia is approximately 11,300 sq km, while Falkland Islands (Islas Malvinas) is approximately 12,173 sq km, making Falkland Islands (Islas Malvinas) 8% larger than Gambia. Meanwhile, the population of Gambia is ~2.4 million people (2.4 million fewer people live in Falkland Islands (Islas Malvinas)).
Tip: This to-scale comparison of Gambia vs. Falkland Islands (Islas Malvinas) uses the Mercator projection, which distorts the size of regions near the poles.