Ta2O5　single　crystals　have　been　grown　by　the　laser　heated　pedestal　growth　(LHPG)　technique　up　to　several　centimeters　length　with　diameter　of　1.1　mm.　The　crystal,　characterized　by　X-ray　diffraction,　dielectric　measurement,　and　thermal　expansion　analysis,　has　Htri-Wa2O5　symmetry.　Dielectric　permittivity,　loss　tangent　along　[001]　and　[110]　direction　were　investigated　over　the　temperature　range　from　-180℃　to　100℃.　Large　dielectric　anisotropy　in　2O5　single　crystal　was　observed.　At　room　temperature,　the　dielectric　permittivities　(1　MHz)　along　[001]　and　[110]　are　33.2　and　231.9,　respectively.　The　reason　of　dielectric　enhancement　in　Ta2O5　crystal　grown　by　LHPG　was　also　discussed.