Icius is a genus of jumping spiders described by Eugène Simon in 1876, belonging to the Order Araneae, Family Salticidae.
Icius is an almost cosmopolitan genus, widespread in Europe (mainly in Belgium, Croatia, France, Germany, Italy, Greece, Poland, Romania, Portugal, southern Russia, Slovenia, Switzerland, Spain and in The Netherlands), as well in Asia, Africa and in Central and South America (one species, Icius pallidulus is endemic of Micronesia).