{ "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Action": "s3:*", "Resource": [ "arn:aws:s3:::mybucket/toto3/*" ] }, { "Effect": "Allow", "Action": [ "s3:ListAllMyBuckets", "s3:GetBucketLocation" ], "Resource": "arn:aws:s3:::*" }, { "Effect": "Allow", "Action": "s3:ListBucket", "Resource": "arn:aws:s3:::mybucket", "Condition": { "StringLike": { "s3:prefix": [ "", "toto3/", "toto3*" ] } } } ] }

https://stackoverflow.com/questions/35944349/iam-aws-s3-to-restrict-to-a-specific-sub-folder