Representatives of more than 30 countries have branded a recent escalation in racist attacks "intolerable" at a time when Northern Ireland needs "decisive leadership".
The Consular Corps/Association of Northern Ireland (CA-NI) made the appeal directly to the first, deputy first and justice ministers as well as the chief constable in an open letter.
It comes a fortnight after the Polish Consul criticised a "total lack of political leadership and a coordinated response" to hate attacks "despite repeated assurances of action".
The formal move came at CA-NI's annual general meeting where it noted "deep concern with the continual and recent escalation of racial attacks on the Black and Minority Ethnic (BME) migrant communities within Northern Ireland".
"This is an intolerable situation that must be stopped as quickly as possible" it said.
The CA-NI has official representation from 35 countries and one international organisation.
It said the rising number of attacks are all the more disappointing because Northern Ireland has seen "constructive changes over the past 15 years from its troubled past".
The group also highlighted the "positive influence" and "significant net contribution to the economy" of `BME' communities.
"Everyone wishes nothing more than to work hard, earn money and lead a happy life in peace and harmony with their families and friends, actively participating in wider society."
CA-NI president Diljit Rana called for "ongoing dialogue" with senior politicians and police officers to help end attacks.
"All `stakeholders', especially central and local government (must) provide decisive leadership at this critical time with support and encouragement to all communities within these affected areas to bring these attacks to an end once and for all," Lord Rana said.
"We all wish to move forward in creating a shared prosperous society for all and this can be best accomplished through mutual respect and tolerance for one another."
In the past year there were 885 hate crimes reported to the PSNI - up 31 per cent on the previous year.
The force has launched a review into how it deals with race hate crimes.
Honorary Polish Consul Jerome Mullen last month also called for political leaders to take action to stop attacks.
He was speaking after a spate of attacks on the homes of Polish people in north Belfast.
Mr Mullen said leadership "must come from the top to have this stamped out once and for all".
Deputy first minister Martin McGuinness called for a "zero tolerance approach to racism and hate crimes" following the attacks.
