His latest achievement continues a record year for the 34-year-old. Smith this year overtook Darren Lockyer for most games and the first player to rack up 40 State of Origin matches.
Smith also became the first forward to reach 2000 points. He is the only member of the 1000-goal club after hitting the mark in the club's preliminary-final win over Brisbane.
It is the sixth time he has been named the best in his position.
Morgan won the halfback of year gong after his breakthrough season in the absence of Johnathan Thurston, while Canberra youngster Nick Cotric was named rookie of the year.
Simamia Taufua was the female of the year, while the Cowboys' Jake Clifford took out the top prize for the Holden Cup.
The NRL also handed out new accolades for interchange player of the year (Reagan Campbell-Gillard) and best tackle (Nathan Brown) and try (Kyle Feldt).
DALLY M CLASS OF 2017:
* Dally M, Captain, Hooker - Cameron Smith (Storm)
* Coach - Craig Bellamy (Storm)
* Fullback - Billy Slater (Storm)
* Wing - Jordan Rapana (Raiders)
* Centre - Dylan Walker (Sea Eagles)
* Five-eighth - Gareth Widdop (Dragons)
* Halfback - Michael Morgan (Cowboys)
* Prop - Aaron Woods (Tigers)
* Second-rower - Matt Gillett (Broncos)
* Lock - Paul Gallen (Sharks)
* Interchange - Reagan Campbell-Gillard (Panthers)
* Tackle - Nathan Brown (Eels)
* Try - Kyle Feldt (Cowboys)
* Top pointscorer - Nathan Cleary (Panthers)
* Top tryscorer - Suliasi Vunivalu (Storm)
* Provan Summons People's Choice - Clinton Gutherson (Eels).