Start with The Fifth Season. There is one order for N. K. Jemisin's trilogy and this is the first book of it: publication order, chronological order and intended order are identical, and the sequence won the Hugo for Best Novel three years running, which is unique.
The reason people ask where to start is not really about order — it is about the opening. The Fifth Season begins with a short, brutal prologue, then splits into three narrative threads, one of which is written in the second person. If you have never read sustained second-person narration, it feels like a gimmick for about fifty pages. It is not a gimmick, and the reason it is used only becomes clear later. Trust it.
The sequence
The Fifth Season, The Obelisk Gate, The Stone Sky. Nothing else slots in. No novellas are required, no prequels exist, and the trilogy is finished.
The structural point worth knowing without spoiling anything: the three threads of book one do not run the way you initially assume, and the book is constructed so that realising this is part of the experience. Do not read plot summaries of book two before finishing book one — they give it away immediately, and it is one of the better structural payoffs in recent fantasy.
Honest warnings
The trilogy opens with a mother whose child has been killed, and it does not soften. Child death, slavery, coerced breeding and systemic dehumanisation are all central rather than incidental. This is a book about oppression written as geology, and it is unremitting. That is the achievement, and it also means it is a hard read at a hard time.
The middle volume, The Obelisk Gate, is the weakest of the three by common assessment — it does necessary structural work and narrows to fewer threads, which costs it the propulsion of book one. It is short. Keep going.
The invented vocabulary is heavy in the first hundred pages. There is a glossary at the back and it is worth knowing that before you start rather than discovering it at the end.
Where to stop
Do not stop. This is a three-book work with a real ending, and The Stone Sky delivers it. There is no natural exit point.
Where to go next in Jemisin
If you want more, the honest ranking matters. The Inheritance trilogy — The Hundred Thousand Kingdoms, The Broken Kingdoms, The Kingdom of Gods — is her debut sequence: gods, palace politics, much more romantic and much less controlled. It is fun and clearly earlier work.
The Dreamblood duology, The Killing Moon and The Shadowed Sun, is the underrated one. An Egyptian-influenced setting where priests harvest dream-magic and kill as an act of mercy; tighter and stranger than the Inheritance books, and the closest in seriousness to Broken Earth.
The City We Became is contemporary urban fantasy about New York boroughs made flesh — a complete change of register, and divisive. Her collection How Long 'Til Black Future Month is the best sampler if you want to test the prose before committing, and several stories are seeds of the novels.
Browse more series reading orders in Discover.
Follow the full ordered path here: The Broken Earth Reading Order and Guide.