4 Elements: The Water

Main

• Engfa Waraha as Apo "Nam" Wathinwanit
  Executive Vice President of the fictional Monarch Global International Hotel owned by the Wathinwanit family.

• Charlotte Austin as Chonlada "Lada" Kunanon
  The illegitimate daughter of Pheemdech, the Wathinwanit family's business rival.

Supporting

• Thanthip Thaweesinthanat (Mew) as Farin "Fah" Carver
  A journalist and Nam's younger half-sister from her mother's second marriage.

• Panichada Kongsawanya (Xobam) as Preem
  Nam's secretary.

• Suchita Oxman (Meena) as Net
  Lada's best friend.

• Asavarid Pinitkanjanapun (Heng) as Phat
  Lada's older brother who sends Lada to be a mole at the Wathinwanit family's hotel.

• Michelle Behrmann as Wadee
  A senior receptionist at the Monarch Global International Hotel.

• Chutima Sodapak (Arm) as Nus
  A senior receptionist at the Monarch Global International Hotel.

• Lapisara Intarasut (Apple) as Kasama "Din" Wathinwanit
  Nam's older cousin and the lead of the 4 Elements: The Earth series.

• Sarocha Chankimha (Freen) as Vayo "Lom" Wathinwanit
  Nam's younger cousin and the lead of the 4 Elements: The Air series.

• Panthita Jencharoentham (Mim) as Thipapha "Rose" Amornjida
  Din's wife and the secondary lead of the 4 Elements: The Earth series.

• Milin Watinthanakit (Namneung) as Atchima "Fai" Wathinwanit
  Nam's youngest cousin and the lead of the 4 Elements: The Fire series.

• Pete Thongchua as Adisorn Wathinwanit
  Nam's father and owner of the Wathinwanit family's hotel chain.

• Phol Tantasathien as Pheemdech Watcharadechara
  Chonlada's father and head of the Watchara Group.

• Prachakorn Piyasakulkaew (Sun) as Pheemwat
  Lada's eldest brother.

• Nicole Theriault as Chutimon Kunanon
  Lada's mother and Pheemdech's second wife.

Guest

• Kochakorn Nimakorn (Ngor) as Pawee Wathinwanit
  Nam and Fah's mother.

• Piya Pongkullapa (Giftza) as May
  Pheemwat's wife and Lada's sister-in-law.