In his strongest statement of support for Qatar in the almost three-week-old crisis centered on the Gulf state, Erdogan said the call to withdraw Turkish forces was disrespectful and that Doha - which described the demands as unreasonable - was taking the right approach.
Qatar said early Saturday it has received a list of demands by the four countries to end their blockade on the Gulf country.
The UAE state minister for foreign affairs, Anwar Gargash, warned on Friday that Qatar should "deal seriously" with the 13 points or face "divorce" from its neighbours.
Doha said it was reviewing the list, but said it was not reasonable or actionable.
Sheikh Yusuf Bin Ahmed, the director of the government's Communication Office, said the blockade was meant to "limit Qatar's sovereignty and interfere in its foreign policy", according to the official QNA news agency.
"The state of Qatar is now studying this paper, the demands contained therein and the foundations on which they were based, in order to prepare an appropriate response to it and hand it over to the state of Kuwait", the Qatar News Agency said, citing a statement by the Ministry of Foreign Affairs.
The four countries have given Doha a 10-day deadline to meet the demands.
Erdogan on Sunday said demanding the withdrawal of Turkish troops from Qatar was a "disrespect to Turkey".
The US secretary of state has said some demands on Qatar by its Middle East neighbours "will be very hard to meet".
The demands are apparently aimed at dismantling Qatar's two-decade-old interventionist foreign policy, which has incensed its Arab neighbours. As well as cutting diplomatic ties, Qatar's neighbours closed their air space to Qatari carriers and blocked the emirate's only land border, vital for its food imports. In the other official response out of Qatar, its Human Rights Committee said the demands represented "gross violations" of basic rights. His spokeswoman Heather Nauert said June 20 the United States was "mystified" that Saudi Arabia and its Gulf allies had failed to present details justifying their embargo on Qatar.