Over the years, the show's fans have taken the Fleming family, who live on the Heartland ranch, into their hearts, with Amber Marshall having played lead character Amy the whole way through.
Around her there have been changes in the cast from season to season, with Graham Wardle's exit as Ty in season 14 being particularly devastating.
But who else is in the main cast for this season and who do they all play? Find out everything you need to know about the Heartland season 16 cast below.
Heartland cast: meet the characters on the ranch this season
Amber Marshall plays Amy Fleming
Who is Amy? Amy is a horse whisperer and the granddaughter of Jack, who owns the Heartland ranch. Her mother Marion died in a car accident in the show's first episode, and due to her own injuries from the accident, Amy was unable to attend her funeral. In the first season her estranged father Tim returns, as does her sister Lou who had been working in New York. Amy starts a relationship with Ty Borden, a ranch hand, and the two eventually get married and have a baby. Ty tragically died at the start of season 14, leaving Amy to adjust to being a single mother to daughter Lyndy Marion.
Where have I seen Amber Marshall before? Besides starring in Heartland since 2007, Marshall has appeared in 2004's Resident Evil: Apocalypse, and television films including Mutant World. Her family owns a horse ranch and she has been known to help out at a local veterinary clinic.
Michelle Morgan plays Samantha Louise 'Lou' Fleming Morris
Who is Lou? Lou is Amy's sister who returns home to Heartland after her mother dies. She leaves behind a lucrative job in New York and ends up taking over the business and financial side of the ranch. Lou meets and starts a relationship with Peter Morris, the owner of a small oil company, and the two get married and have a daughter, Katie. The pair later also adopt Georgie (who doesn't appear in season 15), but after a number of struggles, including a move to Dubai, they end up separating. Lou later began a serious relationship with Mitch, and is also now mayor of the town Hudson.
Where have I seen Michelle Morgan before? Morgan has appeared in a number of Canadian movies and TV films, and has recently appeared in high-profile US series including Supernatural, The Good Doctor and Batwoman.
Shaun Johnston plays Jackson 'Jack' Bartlett
Who is Jack? Jack is the patriarch of the family, Amy and Lou's grandfather and the owner of Heartland ranch. He's also a retired rodeo star, and often butts heads with other member of the family due to his stubborn nature. He became Amy's rock when she lost Ty.
Where have I seen Shaun Johnston before? Johnston appeared in both The X-Files and Smallville, and had a recurring role in supernatural Western series Wynonna Earp as Juan Carlo.
Jessica Steen plays Lisa Stillman
Who is Lisa? Lisa is the owner of Fairfield Stables, and a well-known horse breeder. She has a long and turbulent relationship with Jack throughout the series, but the pair are now married. She is also godmother to Lou and Peter's daughter Katie.
Where have I seen Jessica Steen before? Steen has appeared in US series including Homefront, ER, NCIS and Supernatural. She has also had roles in the ongoing medical drama Grey's Anatomy and a recurring role in Canadian drama Flashpoint. She played co-pilot Jennifer Watts in Michael Bay's disaster epic Armageddon.
Chris Potter plays Timothy 'Tim' Fleming
Who is Tim? Tim is the father of Amy and Lou, who returns at the start of the series. He had been estranged from the family due to his drug and alcohol addiction. He's recently found unexpected feelings for a new guest at the ranch, Jessica.
Where have I seen Chris Potter before? Potter was the original voice Gambit in the beloved X-Men: The Animated Series and appeared in the US adaptation of Russell T Davies' Queer as Folk. He also had a recurring role as con-artist Evan Owen in the long-running US soap The Young and the Restless.