Certain aspects of the present disclosure provide techniques for user equipment (UE) antenna grouping for uplink transmission, such as dynamic antenna grouping for uplink transmission using multiple transmission configurations. A method that may be performed by a UE includes grouping one or more UE antennas into one or more groups and sending an indication of the one or more groups to a base station (BS). Another method that may be performed by a UE includes receiving an indication from a BS to group one or more UE antennas and grouping the one or more UE antennas based on the indication.