An EGR device includes a housing and a baffle. The housing has an outer pipe and a wall. The wall extends radially inward from an end of the outer pipe. The outer pipe defines an EGR inlet. The baffle is accommodated in the outer pipe. The baffle includes an inner pipe defining an inner passage internally and defining an annular passage externally with the outer pipe. The annular passage is configured to communicate with the EGR inlet. The housing has at least one diffuser extending from the wall. The at least one diffuser is located in the annular passage.