The Birmingham-based charity Islamic Relief wants to raise 4m euros (£2.73m) for those displaced in Lebanon.
More than 500,000 people have been displaced in Lebanon
The charity plans to concentrate on providing food and medicines to those who have been affected by the conflict.
Nine days of violence has claimed the lives of 300 people in Lebanon and 29 in Israel that started after Hezbollah captured two Israeli soldiers.
The Lebanese prime minister Fouad Siniora said 500,000 people had been displaced in the attacks.
Jamsheed Din from the charity said: "The information we're getting back is that there is a serious shortage of medicines and food.
"We were working in the south of Lebanon prior to this crisis and so we had some stocks of materials there."