<P> Glenn Franklin Howerton III ( born April 13 , 1976 ) is an American actor , producer , and screenwriter . He is known for his role as Dennis Reynolds in It 's Always Sunny in Philadelphia , for which he is also a writer and executive producer . </P>
<P> Glenn Franklin Howerton III ( born April 13 , 1976 ) is an American actor , producer , and screenwriter . He is known for his role as Dennis Reynolds in It 's Always Sunny in Philadelphia , for which he is also a writer and executive producer . </P>
who plays dennis on it 's always sunny in philadelphia
who plays dennis on it 's always sunny in philadelphia
Glenn Franklin Howerton III
Glenn Franklin Howerton III