A modular and straightforward synthetic strategy for the preparation of alpha-substituted alkenyl acetals has been developed. alpha-Haloalkenyl acetals react smoothly with (het)aryl boronic acids, aryl boronates, or B-alkyl-9-borabicyclo[3.3.1]nonanes through Pd-catalyzed Suzuki cross-coupling under mild conditions with good to high yields. This protocol features a broad substrate scope and good functional-group compatibility, and is easily scaled up.