A spokesman for Hong Kong's Hospital Authority said that 22 people had been injured in the protests on Wednesday, as of 6 p.m. local time.
He said there had been 16 men and 6 women injured, some of whom were still undergoing treatment while others were stable.
Separately a spokesman for the Information Services Department said 10 of the injured were stable, and six had already been discharged. The condition of six others was "unknown."
So far, there have been no fatalities reported from Wednesday's divisive protests.
The health authority spokesman said he didn't know how badly the injured had been hurt or whether they were predominantly police or protesters.
Currently they are located at two hospitals in central Hong Kong -- the Queen Mary and the Ruttonjee.