The alphamegalog of the cities of Tennessee lists the largest city in Tennessee for each letter of the alphabet. In this case, ‘largest’ is based on population within the city proper.

Athens
Bartlett
Chattanooga
Dyersburg
East Ridge
Franklin
Germantown
Hendersonville
Iron City
Jackson
Knoxville
La Vergne
Memphis
Nashville
Oak Ridge
Portland
(no Q)
Red Bank
Smyrna
Tullahoma
Union City
Vonore
White House
(no X)
Yorkville
(no Z)