Different From vs. Different Than

The expressions different from and different than have been used almost interchangeably for at least 300 years.

Different from is preferred to introduce a phrase; however, different than may also be used.

Example: New Orleans natives’ speech is different from that of New York natives’ speech. Example: New Orleans natives’ speech is different than that of New York natives’ speech.

Different than is preferred to introduce a clause; however, different from may be used if more words are added.

Example: The boulevard led to a different street than the map showed.
Example: The boulevard led to a different street from the one the map showed.

Differently is used as an adverb. Use differently than with a clause following. You may use differently from if you add extra wording.

Example: He walked differently than he had hoped after getting the leg cast off.
Example: He walked differently from what he had hoped after getting the leg cast off.