This is a list of all Koroks found in Hyrule Warriors: Age of Calamity.
Chapter 1
The Battle of Hyrule Field
In a wooden crate, just northwest of the northwest outpost.
Step on the stump in the outpost, just south of the starting point.
The yellow flower is against the building near the center of the map.
Examine the yellow flower that is just southwest of the western outpost.
Examine the flower on the path that leads to the ranch in the east.
Shoot the balloon with an arrow at the ranch at the east side of the map.
Examine the pinwheel on the bridge leading to the southeast of the map.
Road to the Ancient Lab
Step on the stump, just north of the central Outpost.
Examine the yellow flower, just east of the central Outpost.
Find the flower at the far south-central part of the map.
Shoot the balloon at the southeast of the map.
Examine the Pinwheel near the southern Unearthed Guardian.
Examine the sparkling leaves near the northern Unearthed Guardian.
Chapter 2
Mipha, the Zora Princess
Shoot the balloon on the higher level of starting point.
Examine the pinwheel, just east of the southeast Outpost.
Examine the pinwheel, located just east of the center of the map.
Examine the yellow flower in the center-west part of the map.
Daruk, the Goron Hero
Right at the crossroads when entering Goron City. Examine the sparkling flowers before the bridge.
Right at the start, head through the base at the west side of the map where Zelda and Impa are and examine the pinwheel that's behind.
In the outpost at the southeast portion of the map. Enter the stone structure and examine the pinwheel.
After crossing the large bridge with a Moblin, while heading to Death Mountain, the pinwheel is off to the west.
At the south central part of the map where two Moblins were fought, near the two outposts. Cross the lava bridge and examine the stump.
Examine the tree stump, just east of the central outpost.
Examine the yellow flower that is at the east side of the hot spring, near the center of the map.
After defeating the two Fire Moblins near the end of the stage, cross the bridge and examine the sparkling leaves on the side.