Lem's Bar-B-Q is a barbecue restaurant in the Chatham community of Chicago, Illinois, in the United States.

Lem's Bar-B-Q was founded in 1951 by Myles Lemons in the Greater Grand Crossing neighborhood in Chicago.

[1] The Lemons brothers were born in Indianola, Mississippi, and moved to Chicago in 1948 to pursue careers in the barbecue industry.

[4] James Lemons, who eventually became Lem's owner and the last brother to remain working at the business, died at age 87 in 2015.

"[1][5] The ribs are smoked in a smoker housed in an aquarium and finished quickly over a hot fire fueled by hickory wood.