Empress Xiaozhuangwen (28 March 1613 – 27 January 1688), of the Khorchin Mongol Borjigit clan, personal name Bumbutai, was a consort of Hong Taiji.
She was 21 years his junior.
As Empress Dowager and Grand Empress Dowager during the reigns of her son and grandson respectively, she had significant influence in the Qing imperial court and was highly respected for her political wisdom and insight.
Although she never held the rank of Empress during Hong Taiji's reign, she was posthumously honoured as an empress.