112 characters in the Arrows Unicode block.
U+2190LEFTWARDS ARROWU+2191UPWARDS ARROWU+2192RIGHTWARDS ARROWU+2193DOWNWARDS ARROWU+2194LEFT RIGHT ARROWU+2195UP DOWN ARROWU+2196NORTH WEST ARROWU+2197NORTH EAST ARROWU+2198SOUTH EAST ARROWU+2199SOUTH WEST ARROWU+219ALEFTWARDS ARROW WITH STROKEU+219BRIGHTWARDS ARROW WITH STROKEU+219CLEFTWARDS WAVE ARROWU+219DRIGHTWARDS WAVE ARROWU+219ELEFTWARDS TWO HEADED ARROWU+219FUPWARDS TWO HEADED ARROWU+21A0RIGHTWARDS TWO HEADED ARROWU+21A1DOWNWARDS TWO HEADED ARROWU+21A2LEFTWARDS ARROW WITH TAILU+21A3RIGHTWARDS ARROW WITH TAILU+21A4LEFTWARDS ARROW FROM BARU+21A5UPWARDS ARROW FROM BARU+21A6RIGHTWARDS ARROW FROM BARU+21A7DOWNWARDS ARROW FROM BARU+21A8UP DOWN ARROW WITH BASEU+21A9LEFTWARDS ARROW WITH HOOKU+21AARIGHTWARDS ARROW WITH HOOKU+21ABLEFTWARDS ARROW WITH LOOPU+21ACRIGHTWARDS ARROW WITH LOOPU+21ADLEFT RIGHT WAVE ARROWU+21AELEFT RIGHT ARROW WITH STROKEU+21AFDOWNWARDS ZIGZAG ARROWU+21B0UPWARDS ARROW WITH TIP LEFTWARDSU+21B1UPWARDS ARROW WITH TIP RIGHTWARDSU+21B2DOWNWARDS ARROW WITH TIP LEFTWARDSU+21B3DOWNWARDS ARROW WITH TIP RIGHTWARDSU+21B4RIGHTWARDS ARROW WITH CORNER DOWNWARDSU+21B5DOWNWARDS ARROW WITH CORNER LEFTWARDSU+21B6ANTICLOCKWISE TOP SEMICIRCLE ARROWU+21B7CLOCKWISE TOP SEMICIRCLE ARROWU+21B8NORTH WEST ARROW TO LONG BARU+21B9LEFTWARDS ARROW TO BAR OVER RIGHTWARDS ARROW TO BARU+21BAANTICLOCKWISE OPEN CIRCLE ARROWU+21BBCLOCKWISE OPEN CIRCLE ARROWU+21BCLEFTWARDS HARPOON WITH BARB UPWARDSU+21BDLEFTWARDS HARPOON WITH BARB DOWNWARDSU+21BEUPWARDS HARPOON WITH BARB RIGHTWARDSU+21BFUPWARDS HARPOON WITH BARB LEFTWARDSU+21C0RIGHTWARDS HARPOON WITH BARB UPWARDSU+21C1RIGHTWARDS HARPOON WITH BARB DOWNWARDSU+21C2DOWNWARDS HARPOON WITH BARB RIGHTWARDSU+21C3DOWNWARDS HARPOON WITH BARB LEFTWARDSU+21C4RIGHTWARDS ARROW OVER LEFTWARDS ARROWU+21C5UPWARDS ARROW LEFTWARDS OF DOWNWARDS ARROWU+21C6LEFTWARDS ARROW OVER RIGHTWARDS ARROWU+21C7LEFTWARDS PAIRED ARROWSU+21C8UPWARDS PAIRED ARROWSU+21C9RIGHTWARDS PAIRED ARROWSU+21CADOWNWARDS PAIRED ARROWSU+21CBLEFTWARDS HARPOON OVER RIGHTWARDS HARPOONU+21CCRIGHTWARDS HARPOON OVER LEFTWARDS HARPOONU+21CDLEFTWARDS DOUBLE ARROW WITH STROKEU+21CELEFT RIGHT DOUBLE ARROW WITH STROKEU+21CFRIGHTWARDS DOUBLE ARROW WITH STROKEU+21D0LEFTWARDS DOUBLE ARROWU+21D1UPWARDS DOUBLE ARROWU+21D2RIGHTWARDS DOUBLE ARROWU+21D3DOWNWARDS DOUBLE ARROWU+21D4LEFT RIGHT DOUBLE ARROWU+21D5UP DOWN DOUBLE ARROWU+21D6NORTH WEST DOUBLE ARROWU+21D7NORTH EAST DOUBLE ARROWU+21D8SOUTH EAST DOUBLE ARROWU+21D9SOUTH WEST DOUBLE ARROWU+21DALEFTWARDS TRIPLE ARROWU+21DBRIGHTWARDS TRIPLE ARROWU+21DCLEFTWARDS SQUIGGLE ARROWU+21DDRIGHTWARDS SQUIGGLE ARROWU+21DEUPWARDS ARROW WITH DOUBLE STROKEU+21DFDOWNWARDS ARROW WITH DOUBLE STROKEU+21E0LEFTWARDS DASHED ARROWU+21E1UPWARDS DASHED ARROWU+21E2RIGHTWARDS DASHED ARROWU+21E3DOWNWARDS DASHED ARROWU+21E4LEFTWARDS ARROW TO BARU+21E5RIGHTWARDS ARROW TO BARU+21E6LEFTWARDS WHITE ARROWU+21E7UPWARDS WHITE ARROWU+21E8RIGHTWARDS WHITE ARROWU+21E9DOWNWARDS WHITE ARROWU+21EAUPWARDS WHITE ARROW FROM BARU+21EBUPWARDS WHITE ARROW ON PEDESTALU+21ECUPWARDS WHITE ARROW ON PEDESTAL WITH HORIZONTAL BARU+21EDUPWARDS WHITE ARROW ON PEDESTAL WITH VERTICAL BARU+21EEUPWARDS WHITE DOUBLE ARROWU+21EFUPWARDS WHITE DOUBLE ARROW ON PEDESTALU+21F0RIGHTWARDS WHITE ARROW FROM WALLU+21F1NORTH WEST ARROW TO CORNERU+21F2SOUTH EAST ARROW TO CORNERU+21F3UP DOWN WHITE ARROWU+21F4RIGHT ARROW WITH SMALL CIRCLEU+21F5DOWNWARDS ARROW LEFTWARDS OF UPWARDS ARROWU+21F6THREE RIGHTWARDS ARROWSU+21F7LEFTWARDS ARROW WITH VERTICAL STROKEU+21F8RIGHTWARDS ARROW WITH VERTICAL STROKEU+21F9LEFT RIGHT ARROW WITH VERTICAL STROKEU+21FALEFTWARDS ARROW WITH DOUBLE VERTICAL STROKEU+21FBRIGHTWARDS ARROW WITH DOUBLE VERTICAL STROKEU+21FCLEFT RIGHT ARROW WITH DOUBLE VERTICAL STROKEU+21FDLEFTWARDS OPEN-HEADED ARROWU+21FERIGHTWARDS OPEN-HEADED ARROWU+21FFLEFT RIGHT OPEN-HEADED ARROW