Yes, Apollo is a child of Zeus. He is one of Zeus's most well-known sons.
Apollo was conceived through an affair between Zeus and the Titaness Leto. This affair occurred while Zeus was married to Hera. Apollo also has a twin sister named Artemis. Due to Hera's jealousy and persecution of Leto, Apollo's birth was difficult, adding to the complexities surrounding his parentage. Despite these challenges, Zeus acknowledged Apollo as his son, and Apollo became a prominent figure in the Olympian pantheon, associated with music, poetry, light, healing, and prophecy.