Top 6 Conferences in St. Louis 2026

1. 1
   PlatinumOrbital’s proprietary rating for how valuable a conference is for selling to businesses in that vertical. Based on attendee quality, exhibitor ROI, and industry relevance.

   NGA Fresh Summit

   Jun 15–17, 2026·St. Louis, MO·2k–5k attendees·$$ ticket

   Our take

   Based on 2k–5k annual attendees, NGA Fresh Summit ranks solidly as a flagship conference within the Grocery sector. Entry at $$ signals a serious operator audience, which is why Orbital rates it at Platinum drawing on multi-cycle exhibitor feedback and verified attendee role data. Operators building pipeline in the Grocery category, this event merits inclusion in your annual conference calendar.

2. 2
   GoldOrbital’s proprietary rating for how valuable a conference is for selling to businesses in that vertical. Based on attendee quality, exhibitor ROI, and industry relevance.

   Barbershop Harmony Society International Convention

   Jun 28–Jul 5, 2026·St. Louis, MO·5k–10k attendees·$$$ ticket

   Our take

   Based on 5k–10k annual attendees, Barbershop Harmony Society International Convention ranks solidly as a high-value conference within the Barber Shops sector. Entry at $$$ reflects a deliberate barrier that filters for committed buyers, which is why Orbital rates it at Gold drawing on multi-cycle exhibitor feedback and verified attendee role data. Operators building pipeline in the Barber Shops category, this event merits inclusion in your annual conference calendar.

3. 3
   SilverOrbital’s proprietary rating for how valuable a conference is for selling to businesses in that vertical. Based on attendee quality, exhibitor ROI, and industry relevance.

   ASHRAE Chapters Regional Conferences

   Apr 23–25, 2026·St. Louis, MO·<500 attendees·$$ ticket

   Our take

   Considering <500 registered participants, ASHRAE Chapters Regional Conferences stands as a Silver-rated gathering for the HVAC vertical. Registration at $$ signals a serious operator audience, leading Orbital to rate it as a Silver event using a framework weighted toward decision-maker access and verified exhibitor ROI. For teams targeting the HVAC space, this gathering is worth a serious look.

4. 4
   SilverOrbital’s proprietary rating for how valuable a conference is for selling to businesses in that vertical. Based on attendee quality, exhibitor ROI, and industry relevance.

   Carbon Capture & Storage Summit

   Jun 2–4, 2026·St. Louis, MO·500–1k attendees·$$$ ticket

   Our take

   With 500–1k industry professionals on the floor, Carbon Capture & Storage Summit sits firmly as a solid mid-tier show across the Gas Stations space. Ticket pricing at $$$ points to a buyer-rich attendee base, and our team places it among Silver events drawing on multi-cycle exhibitor feedback and verified attendee role data. If you're selling into the Gas Stations market, the show deserves a line item in your event budget.

5. 5
   SilverOrbital’s proprietary rating for how valuable a conference is for selling to businesses in that vertical. Based on attendee quality, exhibitor ROI, and industry relevance.

   CleanMed

   May 12–14, 2026·St. Louis, MO·500–1k attendees·$$$ ticket

   Our take

   Based on 500–1k annual attendees, CleanMed ranks solidly as a reliable conference within the Roofing sector. Entry at $$$ signals a serious operator audience, which is why Orbital rates it at Silver using a framework weighted toward decision-maker access and verified exhibitor ROI. For teams targeting the Roofing industry, this show is worth a serious look.

6. 6
   BronzeOrbital’s proprietary rating for how valuable a conference is for selling to businesses in that vertical. Based on attendee quality, exhibitor ROI, and industry relevance.

   ASSE International Mid-Year Meeting

   Apr 14–15, 2026·St. Louis, MO·$ ticket

   Our take

   ASSE International Mid-Year Meeting sits firmly as an accessible show across the Plumbing space. Ticket pricing at $ reflects a deliberate barrier that filters for committed buyers, and our team places it among Bronze events using a framework weighted toward decision-maker access and verified exhibitor ROI. For teams targeting the Plumbing category, this gathering deserves a line item in your event budget.

Quick reference

All 6 conferences at a glance