Alza.cz a.s. is an online shop operating in the Czech Republic, since 2004 in Slovakia (Alza.sk) and since 2014 also in other European Union countries. It is one of the largest domestic online retailers of consumer electronics and also has an important position in the segments of toys, sports, hobby, media and entertainment, perfumes, watches and drugstores. It also operates an eponymous network of brick-and-mortar stores.