Based on the level of respect or formality, you can say hello in Korean in 3 ways: Anyoung (안녕) - informal Anyoung Haseyo? (안녕하세요?) - formal Anyoung Hashimnikka? (안녕하십니까?) - very formal When you ask if someone is there on the phone or at the door, you can say "Yeoboseyo? (여보세요?)".