TikTok's hottest hashtags right now: August 21, 2026
spiderman is TikTok's #1 trending hashtag on August 21, 2026, the same rank as August 20, as Spider-Man: Brand New Day stays in theaters past $2 billion worldwide. movie holds #2. The new commercial tag is tiktokshopbacktoschool at #8, replacing yesterday's shorter tiktokshop label. Trends MCP stored 10 hashtags at 08:01 UTC. gym is the other newcomer, at #10. get_growth on tiktok for onthisday found -22.1% over 7 days and +199.62% over 30 days, with recent volume 110,666,292.
Top trending hashtags on TikTok: August 21
The August 21 hashtag cut is a Marvel movie cluster, school-year tags and generic comedy/ad labels. These 10 ranks come from the Trends MCP snapshot.
spiderman: The character tag leads while Brand New Day is still the #1 IMDb title. No separate TikTok challenge name was in the API row; the film is the why.
movie: A generic film tag holds #2 beside spiderman. Together they are a theatrical-weekend pair, not a single studio campaign string.
onthisday: The anniversary-clip tag rises from #5 to #3. Trends MCP
get_growthon tiktok dated August 18 at value 77.9 versus 100 on August 11 (-22.1%) and versus 26 on July 20 (+199.62%), with volume 110.7 million against 114.7 million a week earlier.ad: Paid-inventory tagging holds #4, up from #6. No single advertiser dominated the fetch.
marvel: The studio tag holds inside the top 5 after sitting at #7 yesterday. It sits under spiderman rather than replacing it. See the TikTok trending hashtags API.
school: Back-to-school tagging rises from #8 to #6. It now sits two ranks above the Shop-specific school tag.
relateable: The misspelled relatable tag holds #7 after sitting at #9 yesterday. No campaign name was attached.
tiktokshopbacktoschool: A Shop promo string enters at #8. Yesterday's board had tiktokshop at #3 and no school suffix. The extra words are the commercial why.
comedy: The genre tag slips from #10 to #9. Unchanged role: a catch-all for skits.
gym: Fitness tagging enters at #10, replacing music. No named challenge was found in the fetch.
The live ranked board beyond today's top 10 is available via the Trends MCP API. Get your free API key
What changed on TikTok hashtags since yesterday
Eight labels overlap. tiktokshop and music leave. The Shop tag comes back with a school suffix.
| Change | Details |
|---|---|
| New entrants | tiktokshopbacktoschool (#8); gym (#10) |
| Big movers (5+ ranks) | None among overlapping tags |
| Drop-offs from August 20 top 10 | tiktokshop (#3); music (#4) |
What today's TikTok hashtag trends reveal
Marvel's theatrical run still sets the top of the tag list. spiderman, movie and marvel occupy three of the first five slots while Brand New Day remains the box-office leader. That is film traffic, not a dance.
School is the second theme. school at #6 plus tiktokshopbacktoschool at #8 is August calendar commerce. onthisday at #3 is the only tag with a volume figure today, and that volume is slightly down week over week even as 30-day growth stays large. music falling off while gym appears is a hobby swap, not a platform story.
Track these trends in real time with Trends MCP
These ranks came from the Trends MCP get_top_trends API on August 21, 2026. The type string is TikTok Trending Hashtags.
{
"type": "TikTok Trending Hashtags",
"limit": 10
}