Erdogan has issued a statement on the Armenian genocide every year on April 24 since 2014.
Armenia pushed for greater recognition of the deaths as genocide in the run-up to the centennial anniversary in 2015 leading to resolutions being passed by the European Parliament, Germany and several other countries' parliaments.
"U.S. credibility on human rights and genocide prevention will be better served when we unequivocally affirm the Armenian Genocide".
U.S. President Donald Trump issued a statement calling the 1915 killings "one of the worst mass atrocities of the 20th century" and said he was committed to ensuring that "such atrocities are not repeated".
The Armenian National Committee of America (ANCA) called on Trump to end America's "Turkey First" approach to Meds Yeghern. They closed by asking that the President: "appropriately mark April 24th as a day of American remembrance of the Armenian Genocide". "The Roman persecution of the Christians, the Turkish massacres of Armenians, the extermination of millions of Jews and Poles by the Nazis are outstanding examples of the crime of genocide".
Another told the station simply, "We're here to demand for the entire world to recognize the Armenian genocide". The U.S. House of Representatives adopted legislation on the Armenian Genocide in 1975, 1984 and 1996.
In his statement, Erdoğan reportedly also expressed "condolences to the Turkish nation over loss of lives of millions of Ottoman citizens due to wars, migrations, conflicts and diseases during the same period".
Thousands of people are taking part in annual Los Angeles marches commemorating the deaths of an estimated 1.5 million Armenians under the Ottoman Empire.
"We also want to remember all those who helped victims, all those who helped rebuild Armenian civilization and culture".
"We reject the inaccurate expressions and the subjective interpretation of history in the written statement by Mr. Donald Trump, President of the U.S., released on 24 April 2018 regarding the events of 1915", the statement said.