The Fantasy Review‘s list of 6 Fantasy Book Series for Young Readers Similar to the Redwall Series.
The Chronicles of Prydain by Lloyd Alexander
From the blurb of book 1:
…the adventures of Taran the Assistant Pig-Keeper and his quest to become a hero. Taran is joined by an engaging cast of characters that includes Eilonwy, the strong-willed and sharp-tongued princess; Fflewddur Fflam, the hyperbole-prone bard; the ever-faithful Gurgi; and the curmudgeonly Doli―all of whom have become involved in an epic struggle between good and evil that shapes the fate of the legendary land of Prydain.…
The Green Ember by S.D. Smith
From the blurb of book 1:
Heather and Picket are extraordinary rabbits with ordinary lives until calamitous events overtake them, spilling them into a cauldron of misadventures. They discover that their own story is bound up in the tumult threatening to overwhelm the wider world.
Kings fall and kingdoms totter. Tyrants ascend and terrors threaten. Betrayal beckons, and loyalty is a broken road with peril around every bend….
The Wingfeather Saga by Andrew Peterson
From the blurb of book 1:
Janner Igiby, his brother, Tink, and their disabled sister, Leeli, are gifted children as all children are, loved well by a noble mother and ex-pirate grandfather. But they will need all their gifts and all that they love to survive the evil pursuit of the venomous Fangs of Dang, who have crossed the dark sea to rule the land with malice. The Igibys hold the secret to the lost legend and jewels of good King Wingfeather of the Shining Isle of Anniera.…
The Deptford Mice by Robin Jarvis
From the blurb of book 1:
In the British tradition of Redwall comes this first novel of a trilogy that is sure to capture fans both young and old. In the sewers of Deptford, there lurks a dark presence that fills the tunnels with fear. The rats worship it in the blackness and name it “Jupiter, Lord of All.” Into this twilight realm wanders a small and frightened mouse-the unwitting trigger of a chain of events that hurtles the Deptford mice into a world of heroic adventure and terror.…
Warriors by Erin Hunter
From the blurb of book 1:
For generations, four Clans of wild cats have shared the forest according to the laws laid down by their ancestors. But the warrior code has been threatened, and the ThunderClan cats are in grave danger. The sinister ShadowClan grows stronger every day. Noble warriors are dying—and some deaths are more mysterious than others.…
Wings of Fire by Tui T. Sutherland
From the blurb of book 1:
Clay has lived his whole life under the mountain. The MudWing dragonet knows that war is raging between the dragon tribes in the world outside — a war that he and four other dragonets are destined to end, according to the mysterious Prophecy they’ve been taught. The five “chosen” dragonets were stolen from their homes while they were still in their eggs and hidden away ever since — all to fulfill the Prophecy.…