Mr Gutwein last year set up the Commission of Inquiry into the Tasmanian Government's Responses to Child Sexual Abuse in Institutional Settings after abuse allegations were levelled at public servants.
He was asked on Friday by media about the conduct of his Liberal colleagues, who have been criticised for groaning in state parliament earlier this week when the Labor opposition quoted an abuse survivor in a question about the inquiry.
"I have great empathy with people that are victim-survivors," Mr Gutwein told reporters.
"I have great empathy because I have walked in their shoes."
Mr Gutwein said he was sexually assaulted by a former teacher when he was aged 16 and on Christmas holidays.
"I was asked to go to their home to have a beer, which I thought was fantastic," he said.
"I'd known this person for a long period of time, they'd spent a lot of time around the football club I was involved with.
"While I was there, they placed their arm around me and they grabbed for my groin. They tried to get their hand down my pants.
"I was big enough and strong enough to get them off me and to get away."
Twenty years ago, Mr Gutwein crossed the floor to support an attempt to establish a Commission of Inquiry, something he said could have derailed his political career.
"I haven't spoken to anyone about the motivations behind why I crossed the floor in 2002," he said.
"(Or) why I feel so passionate about having this Commission of Inquiry and once and for all getting to the bottom of these matters. But they are very personal."
Mr Gutwein has reached out to the victim-survivor quoted in parliament and has apologised on behalf of the government.
"I know what the loss of trust feels like. I know what the shame feels like," he said.
The inquiry, which is the equivalent of a royal commission, is set to hold public hearings in Hobart and Launceston from May and deliver a final report next year.
It was called after concerns were raised about how the government handled complaints about nurse James Geoffrey Griffin, who took his own life after being charged with child abuse offences in 2019.
The inquiry will also examine allegations of abuse at the Ashley Youth Detention Centre, which will be closed in coming years.
During opening submissions in October, counsel assisting the commission, Maree Norton, said the inquiry was aware of allegations of abuse at the centre from the 1970s onwards.
"It has also been alleged that staff at Ashley have covered up the abuse, that they have destroyed records or failed to report abuse at all," she said.
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