Ibhrahim F. I. Shihata, a lawyer and Egyptian national, has been named general counsel and a vice president of the World Bank, President A. W. Clausen has informed the staff. He will become the top-ranking Arab at the international lending agency.

Shihata, 45, is presently director-general of the OPEC Fund for International Development in Vienna. He will take his new post before the end of the bank fiscal year on June 30, 1983.

His appointment comes at a time of increasing Arab influence at both the bank and the International Monetary Fund. The top-ranking Arab at the IMF is A. Shakour Shaalan, also of Egypt, who is director of the IMF Middle Eastern Department, a title comparable to that of a vice president of the bank. Shaalan, with the fund since 1961, got his top-level appointment in 1977.

Shihata will succeed Heribert Golsong, who resigned in June. Shihata has law degrees from Cairo University and a doctorate in judicial science from Harvard Law School. Before becoming head of the OPEC fund in 1976, Shihata taught law at Cairo University. He also has participated in the creation of several other Arab development funds.

As general counsel at the bank, Shihata will be one of seven vice presidents (out of a total of 16) who form the managing committee, the top internal administrative body in the bank, under Clausen.

Recent agreements by international lending and financial institutions:

Export-Import Bank

* A $9 million loan and a $1.2 million supplier credit with the bank's guarantee to Cameroon. The funding will be used to purchase U.S. goods and technical expertise for the construction of eight agricultural storage warehouses.

International Monetary Fund

* The Asian Development Bank of Manila has become a holder of special drawing rights, the IMF announced. The Manila bank is the 13th bank to acquire the right to use special drawing rights in transactions with any of the other 12 prescribed holders and with any of the fund's members.

Inter-American Development Bank

* A financing equivalent of $500,000 in European Currency Units of Account to Bolivia to help with an agricultural credit program.

* Two loans totaling $80 million to Mexico to assist in urban renewal. Of the total, $44 million is drawn from the bank's ordinary capital and $36 million from the fund for special operations. The loans were extended to the national public works agency and the trustee of the Federal Municipal Development Trust Fund.

* A $20 million loan to Honduras to carry out the second stage of a program to expand mid-level technical education.