You only need a small Marvel watchlist before Guardians of the Galaxy Vol. 3 — but there’s also a “completionist” path if you want maximum emotional payoff.

Quick Scoop: Essential Watch Order

If you want the bare minimum that still hits all the key story and emotional beats, watch these in order:

  1. Guardians of the Galaxy (2014)
    • Introduces the team, their dynamics, and key locations like Knowhere.
    • Sets up Peter, Gamora, Rocket, Groot, and Drax, so Vol. 3’s relationships actually land.
  2. Guardians of the Galaxy Vol. 2 (2017)
    • Deepens everyone’s backstory, especially Peter, Gamora, Nebula, and Yondu.
    • Vol. 3 emotionally leans hard on things that happen here (family, found family, guilt, grief).
  3. Avengers: Infinity War (2018)
    • The Guardians collide with the Avengers and Thanos.
    • Gamora’s fate and Peter’s reaction are crucial context for where he is emotionally in Vol. 3.
  4. Avengers: Endgame (2019)
    • Shows the aftermath of Thanos’ actions and where the Guardians end up.
    • Sets up the status quo that Vol. 3 starts from (especially the “new” Gamora situation).
  5. The Guardians of the Galaxy Holiday Special (2022)
    • Short, easy watch; fills in details like their new base, some character upgrades, and relationships.
    • Has a couple of reveals that Vol. 3 treats as already known.

If you watch just those five, you’re very well prepared.

Optional But Nice To Watch

If you want a bit more flavor and connective tissue:

  • Thor: Love and Thunder (opening segments)
    • Shows what Thor and the Guardians have been up to together post-Endgame.
    • Not essential for understanding Vol. 3, but gives a fun “bridge” vibe between Endgame and the Holiday Special.
  • I Am Groot (animated shorts)
    • Cute little side adventures with Baby Groot.
    • Purely optional, more for charm than plot.

“How deep do I need to go?” (Different Viewpoints)

Fans usually break it down like this:

  • Story-first viewer
    • Watch: GotG 1, GotG 2, Infinity War, Endgame, Holiday Special.
    • Skip the rest; you’ll follow Vol. 3 just fine.
  • MCU-lore enjoyer
    • Same as above, plus Thor: Ragnarok and Thor: Love and Thunder to better feel the cosmic corner of the MCU and Thor’s time with the team.
  • New-to-MCU but curious
    • If you’re really short on time: GotG 1 → GotG 2 → Infinity War → Vol. 3.
    • You’ll miss some Endgame context, but you’ll “get” the Guardians themselves.

A simple “movie night” run that works great is:

Guardians 1 → Guardians 2 → Infinity War → Endgame → Holiday Special → Guardians 3

Why These Matter For Vol. 3’s Story

Vol. 3 leans heavily on:

  • The found-family theme built across the first two films.
  • The fallout from Thanos’ actions in Infinity War and Endgame , especially around Gamora and Peter’s grief.
  • The team’s new status quo (base, responsibilities, subtle relationship changes) set up in the Holiday Special.
  • Rocket’s past, hinted at earlier, becoming fully central in Vol. 3.

Knowing those beats makes Vol. 3’s emotional gut-punches hit much harder than going in cold.

Trend & Forum Talk (Spoiler‑Light)

Around its release and even now, forum discussions and fan lists tend to agree on a few points:

  • You really feel Vol. 3 more if you’ve just rewatched the first two Guardians movies, because you notice how much the characters have grown.
  • People who skipped the Holiday Special often say afterward, “Okay, I see I missed a bit of context, but I could still follow everything.”
  • Thor: Love and Thunder is regularly labeled “fun but optional” for Vol. 3 prep; it’s more about vibes than vital plot.

SEO‑Style Mini Summary (for your post)

If you’re writing a post about what to watch before Guardians of the Galaxy 3 , a concise answer could be:

  • Must-watch:
    • Guardians of the Galaxy
    • Guardians of the Galaxy Vol. 2
    • Avengers: Infinity War
    • Avengers: Endgame
    • The Guardians of the Galaxy Holiday Special
  • Nice extras:
    • Thor: Love and Thunder (intro)
    • I Am Groot shorts

That balances “I don’t want to watch 20+ MCU projects” with “I want Vol. 3 to hit as hard as it can.” Bottom note:
Information gathered from public forums or data available on the internet and portrayed here.