The 20/21 men's and women's Energia All-Ireland Leagues have been cancelled due to the impact of the Covid-19 pandemic.
Clubs have been in limbo since last March when games were first suspended by the IRFU.
They saw some action in the autumn's Energia Community Series but that was a brief return, with the latest lockdown putting training and games on ice again.
It had been widely expected that the campaign would be scrapped and the IRFU today confirmed as much. The 2021/22 Vodafone Women's Interprovincial series has also been scratched.
The IRFU said tit will look to finish the Energia Community Series at some point and to review alternative forms of rugby, such as touch and tag competitions, to give players some form of action.
"As Covid-19 continues to impact our lives we had to make the difficult decision to cancel the 2020/21 All-Ireland Leagues and the women’s interprovincial championship," said Greg Barrett, chair of the IRFU Rugby Committee.
"A huge amount of work is on-going, and we continue to look at avenues that may provide players and clubs with the rugby that they love.
"Our commitment to players and our clubs remains clear – we will continue to adopt a flexible approach to season planning and will proceed with rugby when cleared to do so by government guidelines."
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