Warriors managing director Jim Doyle said if the recommendations were accepted it would mark a "sea change" in league and other sports, especially at a time when corporate sponsorship was becoming scarcer.
The Warriors' deals with Independent Liquor and Sileni wines would be affected by the proposals.
Mr Doyle said there would be several fishhooks. Because his team played in an Australian competition the Warriors would be at a disadvantage because they would be the only team in the NRL which could not rely on alcohol-related funding.
NZ Cricket, which is backed by Dominion Breweries and Pernod Ricard, and the All Blacks, which has long had links with Steinlager, expressed similar concerns.
The Heineken Open and Tui's "Catch a Million" contest were also cited as among those affected.
Public health researchers pointed out to the forum that tobacco sponsorship was also entrenched in New Zealand but clubs managed to wean themselves off it over time.
The Government immediately talked down the prospect of changes.
Justice Minister Amy Adams said the forum had been unable to quantify the full effect of their proposals, and she had asked for further work from officials to see if any of the recommendations would be feasible.
The forum's report acknowledged the risks to sport and said alternative funding plans would be needed.
"Given the revered status of sport and sporting heroes in New Zealand, the forum sees implicit association between alcohol consumption and sport as unacceptable and too prevalent to leave unattended."
Proposed gambling changes were watered down last year after a huge backlash from sporting groups worried about loss of funding.
Alcohol and sport
Why is alcohol sponsorship and advertising being reviewed?
As part of alcohol reforms passed in 2012, the Government wanted a full review of whether alcohol sponsorship and marketing had any negative effects on New Zealanders' drinking.
What does the review say?
It says there is a link between young people's exposure to alcohol promotions and increased consumption or young people drinking earlier in life. In response, it recommends a ban on alcohol sponsorship of sports and further limits on advertising on television and in public places. While it can't accurately measure the potential effect of these proposals, some changes are needed to prevent harmful drinking behaviour.
What does the industry say?
It says a direct link between advertising and heavier drinking has not been proven. It also warns that cutting off alcohol sponsorship will badly hurt sports and community groups. Restricting alcohol advertising will lead to a "cash grab" scenario where consumers buy only on price, not brand, possibly leading to more harmful drinking.
What happens now?
The Government says more work is needed to see whether the proposals are feasible and what impact they will have. Officials will report back in June.
