We　describe　the　Pd-II-catalyzed　decarboxylative　Heck　reaction　of　aromatic　carboxylic　acids　with　an　array　of　electronically　unbiased　olefins,　which　allows　regioselective　formation　of　less　common　branched　products　in　good　yield.　This　protocol　enables　the　use　of　inexpensive,　stable,　and　readily　available　aromatic　carboxylic　acids　as　aryl　reagents,　thus　providing　an　attractive　method　for　the　synthesis　of　useful　-alkyl　vinylarenes.