Most gods have a multitude of names. The most personal name of the Hebrew and Christian deity is YHWH or JHVH. The Hebrews would never pronounce the Name aloud, so they added the vowels for Adonai (Lord) so that people would read this word as "The LORD" (in English). If you mix these two words together, you get Jehovah. It's not God's "real name" but rather a mix between His most personal name and his most revenant title.
Exodus 3:13 Then Moses said to God, "Behold, I am going to the sons of Israel, and I shall say to them, 'The God of your fathers has sent me to you.' Now they may say to me, 'What is His name?' What shall I say to them?" 14 And God said to Moses, "I AM WHO I AM"; and He said, "Thus you shall say to the sons of Israel, 'I AM has sent me to you.'"
The real answer of this question is JEHOVAH all of u that says Jehovah are right and to prove it go to psalms83:18 this will help you believe if you dont find GOD real name in PSALMS83:18 it means you need to find a JEHOVAH WITNESS to show you the truth bible