The Definitive Count: How Many Seasons Of The Hit CBS Sitcom Mom Are There?

The acclaimed CBS sitcom Mom, a heartfelt dramedy from the mind of Chuck Lorre, is one of the most successful and critically lauded comedies of the last decade, sparking intense curiosity about its run. As of today, December 12, 2025, the definitive answer to "how many seasons of Mom are there" is a solid eight, culminating in a powerful series finale that aired in May 2021. The show, which premiered in 2013, became a groundbreaking staple for its unflinching look at addiction, recovery, and the complexities of a mother-daughter relationship, delivering both sharp humor and profound emotional depth throughout its tenure.

The series concluded its run with a remarkable 170 episodes, cementing its legacy as one of the longest-running and most important comedies on television, particularly for its handling of sensitive subject matter like alcoholism and drug addiction. While the journey of the central characters, Bonnie and Christy Plunkett, was a rollercoaster of sobriety and relapse, the show’s total length provides fans with a substantial and complete narrative arc, even after a major cast shakeup in its final year.

Complete Cast & Character Biographies: The Plunkett Family and the AA Group

The heart of Mom lay in its ensemble cast, a powerhouse of comedic and dramatic talent that brought the weekly AA meetings to life. The show's success and topical authority were built on the chemistry and individual brilliance of these actors, who tackled real-life issues with grace and humor.

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• Allison Janney as Bonnie Plunkett: The matriarch, a recovering alcoholic and drug addict with a troubled past who attempts to mend her relationship with her daughter, Christy. Janney's performance was the anchor of the show, particularly in the final season.
• Anna Faris as Christy Plunkett: Bonnie's daughter, also a recovering addict and single mother who works to turn her life around by pursuing a law degree. Faris starred for seven seasons before her departure.
• Mimi Kennedy as Marjorie Armstrong-Perugian: A veteran of the AA group and a mentor to both Bonnie and Christy. She represents the long-term journey of sobriety.
• Jaime Pressly as Jill Kendall: A wealthy, emotionally fragile member of the AA group who initially struggles with her sobriety but finds a strong support system in the women.
• Beth Hall as Wendy Harris: A sweet, often overlooked, but ever-present nurse and member of the AA group, known for her cheerful demeanor despite her own struggles.
• Kristen Johnston as Tammy Diffendorf: Bonnie’s former childhood friend from foster care who joins the group after being released from prison. She became a main cast member in the later seasons, adding a fresh dynamic.
• William Fichtner as Adam Janikowski: Bonnie's eventual husband, a wheelchair-using former stuntman who provides a stable, loving presence in her chaotic life.

The Eight-Season Journey: A Timeline of Critical Acclaim and Evolution

Spanning from September 23, 2013, to May 13, 2021, the eight seasons of Mom marked a significant evolution in network sitcoms. The initial seasons focused heavily on the volatile dynamic between Christy and Bonnie, navigating their shared history of addiction, teen pregnancy, and poverty in Napa, California. The show quickly gained a reputation for its willingness to balance gut-wrenching drama with sharp, multi-camera comedy, a hallmark of creator Chuck Lorre’s work.

As the series progressed, it broadened its scope to become a true ensemble piece, shifting focus from the immediate family to the powerful bond formed within the women's AA meeting group. This expansion introduced beloved entities like Jill, Wendy, and Marjorie, deepening the topical exploration of recovery. The show tackled a myriad of serious themes, including cancer, homelessness, gambling addiction, and domestic violence, always grounding the issues in the characters' ongoing journey toward sobriety.

The critical success was immense, lending substantial topical authority to the show’s message. Allison Janney, in particular, was celebrated for her portrayal of Bonnie Plunkett, winning two consecutive Primetime Emmy Awards for Outstanding Supporting Actress in a Comedy Series in 2014 and 2015. This recognition highlighted the show's rare ability to mix entertainment with meaningful social commentary, making every episode a fresh and unique experience for viewers.

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Why Did Mom End After Eight Seasons? The Anna Faris Factor

The conclusion of Mom after its eighth season was a significant event in television, and the decision was rooted in a combination of factors, most notably the unexpected departure of co-lead Anna Faris (Christy Plunkett) before the final season began.

In September 2020, just before production for Season 8 was scheduled to start, Anna Faris announced she would not be returning to the show, stating she was leaving to pursue "new opportunities" and other career endeavors. This shocking news forced the writers to pivot the narrative. Instead of ending the mother-daughter storyline, Christy's character was written off by having her accept a scholarship to Georgetown Law School in Washington D.C., allowing her to pursue her dreams.

The eighth season, which consisted of 18 episodes, became a solo vehicle for Allison Janney's Bonnie, focusing on her continued growth, her marriage to Adam, and her role as the central figure of the AA group. While the show proved it could thrive without one of its original stars, the network ultimately decided that the eighth season would be the last. CBS announced the veteran comedy would be concluding, bringing the long-running dramedy to a natural close. The final episode, the series finale, aired on May 13, 2021, providing a satisfying and emotional farewell that celebrated the power of friendship, forgiveness, and the enduring journey of recovery.

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The Lasting Legacy and LSI Entities of Mom

Even though the show concluded, the legacy of Mom continues to resonate, particularly due to its deep dive into the complex world of addiction. The series normalized conversations around AA meetings, sponsors, and the daily struggle for sobriety, making it a crucial piece of television for its social impact.

The show's success in weaving comedy into such serious themes created a rich tapestry of LSI (Latent Semantic Indexing) entities that are essential for understanding its depth:

• Sober Living: The core concept that drives the plot and character development.
• 12-Step Program: The foundation of the characters' recovery journeys.
• Chuck Lorre Sitcoms: Linking the show to the successful production history of its creator.
• Multi-Camera Comedy: The technical format that allowed for the fast-paced, theatrical humor.
• Christy Plunkett's Education: Her goal of becoming a lawyer, representing the hope for a better future.
• Tammy's Halfway House: A recurring setting that highlights the transitional phase of recovery.
• Jill Kendall's Adoption: A major storyline that explored emotional maturity and finding purpose.

In summary, the answer to "how many Mom seasons are there" is eight, a run that gave fans 170 episodes of laughter, tears, and a groundbreaking portrayal of recovery that remains unique in the history of network television.