Moran, a 16-year-old England youth international, will link up with Chris Moore’s under-18s squad as a first-year scholar.
Moran has risen through the youth ranks at Liverpool, making his debut for the Reds under-18s side as a 15-year-old in March 2024.
The defender has captained England at youth level, where he has been capped six times at under-15 level.
Academy Director Steve Harper said: “Isaac joins us with a strong pedigree and a maturity beyond his years.
“The leadership qualities he has displayed to date speak volumes about his character, and we’re excited to help him continue developing both as a player and a person.
“He’s a driven individual who fits the values of our Academy perfectly.”
“Isaac’s addition to the Academy reflects the continued excellence of our recruitment team, whose efforts remain integral to our long-term strategy.”