Mark Lentry is 6' 1".
Mark Kelly is not tall
Mark Harmon is 6ft tall.
Mark Zuckerberg is 5'8.5
Mark Corden is 6'.
Mark Cotney is 6'.
Mark Sayre is 6'.
Mark Sinacori is 6'.
Mark Smolinski is 6'.
Mark Souza is 6'.
Mark Shimer is 6'.
Mark Rowley is 6'.
Mark Sporleder is 6'.