Brittany Lauga, the assistant minister for health, said she reported the incident to Yeppoon Police in the early hours of April 28.
Lauga alleges she had ingested a substance without her consent, which impacted her “significantly”.
“I went to the Yeppoon Police Station and Yeppoon Hospital, after being drugged and sexually assaulted,” she said via social media.
“Tests at the hospital confirmed the presence of drugs in my body which I did not take. This substance impacted me significantly.”
The Queensland MP said she had been contacted by other women who may have also been drugged in Yeppoon, about 38 kilometres northeast of Rockhampton.
“This could have happened to anyone and tragically, it does happen to many of us,” Lauga said.
“I have had multiple women contact me who have experienced the same thing in our town.
“We should be able to enjoy socialising in our town without the risk of being drugged or assaulted.”
Lauga requested privacy in the post, saying she needed time to “physically and emotionally heal”.
“Thank you to everyone who has reached out to me in support. I truly value your thoughtful messages, gestures and kindness.
“If you have any information that may assist the investigation, please tell the police.”
Queensland Police have been contacted by 9news.com.au for comment.