An air intake device for an engine , the air intake device comprising: an intake passage for leading intake air to combustion chambers of a multi-cylinder engine; an exhaust passage for discharging exhaust gas from the combustion chambers; and an EGR passage connecting the intake passage with the exhaust passage for returning a portion of the exhaust gas as EGR gas from the exhaust passage to the intake passage , wherein the EGR passage includes, in a position close to a connection port to the intake passage, an expanding portion in which a passage cross-sectional area expands and which lowers a flow speed of the EGR gas so as to reduce an uneven flow, in the connection port , of the EGR gas flowing into the intake passage, wherein the EGR passage includes a passage portion extending toward the connection port and in a direction intersecting with the intake passage and intersecting with a center line (D) of the connection port and a direction-changing portion being continuous with the passage portion , changing a direction to the direction of the center line (D) of the connection port , and reaching the connection port , wherein the expanding portion is provided in the direction-changing portion , wherein the intake passage includes a supercharging passage in which a supercharger for raising a pressure of the intake air introduced into the combustion chambers is arranged and a bypass passage connecting an upstream side with a downstream side of the supercharger for leading the intake air to the combustion chambers while bypassing the supercharger , wherein the EGR passage is connected with the bypass passage of the intake passage , wherein the air intake device comprises an EGR valve of a poppet type, the EGR valve being provided to the connection port and adjusting a returning amount of the EGR gas, and wherein a valve shaft of the EGR valve passes through the bypass passage . an intake passage for leading intake air to combustion chambers of a multi-cylinder engine; an exhaust passage for discharging exhaust gas from the combustion chambers; and an EGR passage connecting the intake passage with the exhaust passage for returning a portion of the exhaust gas as EGR gas from the exhaust passage to the intake passage , wherein the EGR passage includes, in a position close to a connection port to the intake passage, an expanding portion in which a passage cross-sectional area expands and which lowers a flow speed of the EGR gas so as to reduce an uneven flow, in the connection port , of the EGR gas flowing into the intake passage, wherein the EGR passage includes a passage portion extending toward the connection port and in a direction intersecting with the intake passage and intersecting with a center line (D) of the connection port and a direction-changing portion being continuous with the passage portion , changing a direction to the direction of the center line (D) of the connection port , and reaching the connection port , wherein the expanding portion is provided in the direction-changing portion , wherein the intake passage includes a supercharging passage in which a supercharger for raising a pressure of the intake air introduced into the combustion chambers is arranged and a bypass passage connecting an upstream side with a downstream side of the supercharger for leading the intake air to the combustion chambers while bypassing the supercharger , wherein the EGR passage is connected with the bypass passage of the intake passage , wherein the air intake device comprises an EGR valve of a poppet type, the EGR valve being provided to the connection port and adjusting a returning amount of the EGR gas, and wherein a valve shaft of the EGR valve passes through the bypass passage . <EOS>