Does Turkish need visa for Dubai?

YES they need a visa.

General Guideline

You can get your visa from your airline, hotel, tour operator.

Which nationalities can obtain visa on arrival?

Only Applicable to Nationals of the Countries Listed Below:

Western European Countries: United Kingdom, France, Italy, Germany, Holland, Belgium, Luxembourg,

Switzerland, Austria, Sweden, Norway, Denmark, Portugal, Ireland, Greece, Finland, Spain, Monaco,

Vatican City, Iceland, Andorra, San Marino, Liechtenstein.

North America: USA, Canada

Pacific Rim: Australia, New Zealand, Japan, Brunei, Hong Kong, Singapore, Malaysia, South Korea.