Madonna may face a ban from the Philippines for disrespecting the country's flag during a live concert on Wednesday in Manila.

The chief of the Heraldry Section of the National Historical Commission of the Philippines (NHCP), Teodoro Atienza, told radio station dzBB on Friday the flag had been "ridiculed" by the singer on stage.

Madonna performs at the O2 in London on her Rebel Heart world tour. Credit:Getty Images

"They may face deportation and might not be able to return to the country. She also allowed the flag to touch the stage floor, which is another violation."

Republic Act No. 8491, section 34,which stipulates the code of the national flag, coat-of-arms, anthem and motto, "prohibits wearing the flag in whole or in part as a costume or uniform".