"社長" (しゃちょう) is the highest-ranking person in a company, similar to a CEO or company president. They are responsible for leading the company and making major decisions. For instance, "会社の社長はとても忙しいです" (The company president is very busy).

会社のトップの人で、社長さんと呼ばれます。会社全体をまとめます。例：社長は会議中です。