Mohamad Ibrahim announced his resignation as coach of Kuwait after their 1-0 home defeat to Oman in a 2011 AFC Asian Cup qualifier at Al Kuwait Stadium.
Hassan Rabea grabbed the game's only goal in the second half to ensure Oman took the three points and leave Kuwait rooted to the foot of the Group B table without a win in two games.
"I announced my resignation from my post after this disappointing defeat," said Ibrahim. "I hope that the Kuwait FA transition committee can find a suitable replacement to lead the team."
Kuwait had chances to take something from the game as Khaled Khalaf failed to score when faced with an empty goal while Bader Al Mutawa's injury-time penalty was denied by Oman goalkeeper Mohammed Al Hooti.
And, despite his decision to leave his post, Ibrahim praised his players' performance.
"I'm satisfied with the performance of the players as they had a good match," he added. "I'm also happy with the form of Ahmed Ajab despite the fact he was not fortunate enough to score today.
"The goal that we conceded was due to a foul on Bader Al Mutawa and Oman managed to score from the counter attack. Oman are a good side and they have a lot of players who play abroad and they were well prepared."
Oman coach Claude Le Roy, meanwhile, was delighted with victory but was unhappy with the behaviour of the home fans.
"The fans didn't behave in a civilised way and some of their reactions made me feel that I'm at a war," said the Frenchman. "We had a good game today as we knew how to react to Kuwait's attacks and slowly build our own.
"The most important thing is that we got the three points despite the fact we were missing a lot of our key players."