Athlone-based Safe Ireland is welcoming the move.
Airbnb will make free hotel rooms available for victims of domestic abuse who can't find space in a refuge.
There's been an increase of nearly two fifths in the number of calls to the Women's Aid helpline since the Covid-19 pandemic began - and cuts in the amount of space in women's refuges.
Catriona Gleeson, from Safe Ireland, says it's a very welcome stop-gap because of the acute shortages in the sector.
But she says it can't last forever - and victims of domestic abuse need a permanent, state-backed solution: