Dvd Hymnn (brn 1959) s n mrcn rchtct, wrtr, nd dctr. H s mst knwn fr hs 1988 dsgn f n nvrnmntlly frndly hs fr thn Gvrnr f Txs, Grg W. Bsh, nd Lr Bsh fr thr Prr Chpl Rnch nr Crwfrd, Txs. Hymnn s cntrbtng wrtr fr Plcs Jrnl. n 2014 h pblshd bk f shrt strs, My Btfl Cty stn. H s crrntly th Hrwll Hmltn Hrrs Rgnts Prfssr t nvrsty f Txs t stn Schl f rchtctr.