As part of DonateLife Week 2019, those Tasmanians are being asked to find a "plus one" who hasn't registered to sign up.

Health Minister Sarah Courtney said Tasmanians were incredibly generous, and the proof was reflected in the fact that 48 per cent of the state was registered.

"We know that donating organs and tissues can save people's lives," Ms Courtney said.

"This week's campaign is about 'plus one'. Speak to a friend, family, coworker, or colleague about them signing up to DonateLife. The more people we have registered the more chance we have of lifesaving operations and procedures."

"Tasmanians are already punching above [their] weight but there's always more that we can do," Ms Courtney said.

"It'd be great to double the list of donors we have here in Tasmania, because we know that it does save lives."

There are currently 14,000 Australians waitlisted for a transplant.

Ms Courtney said this year alone in Tasmania, there had been 12 successful donors and 36 recipients.

"In the last decade, 11,000 people have had their lives saved by organ donation, and we want to see this continue to rise," she said.

"We also know that in Tasmania we have high levels, but they could be higher."

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Ms Courtney said you're never too old to become an organ donor.

"You also don't have to be the healthiest person," she said.

"I would encourage all people to register because you can save lives and you can improve the quality of lives of other Tasmanians."

DonateLife Week runs until Sunday, August 4.

Registering to the organ donation register is quick and easy, and can be done online at donatelife.gov.au.