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Free Events and Things to do in Islip, NY

Search for something you love or check out popular events in your area.

Almost full
Stew Leonard's Trick or Treat
Tue, Oct 27, 4:00 PM
Maywood · Stew Leonards
Almost full
Stew Leonard's Trick or Treat
Tue, Oct 27, 4:00 PM
Maywood · Stew Leonards
Ribbon Cutting Ceremony for Kings Park
Tue, Nov 10, 4:30 PM
San Remo · The Cornerstone Kings Park
Ribbon Cutting Ceremony for Kings Park
Tue, Nov 10, 4:30 PM
San Remo · The Cornerstone Kings Park
Sales end soon
2nd Annual Mopar & More Car Show
Saturday at 10:00 AM
Candy Section · Huntington Ram Service & Parts
Sales end soon
2nd Annual Mopar & More Car Show
Saturday at 10:00 AM
Candy Section · Huntington Ram Service & Parts
Selling fast
Coltrane at 100: The Coltrane Legacy
Sat, Nov 14, 3:00 PM
Caledonia · Half Hollow Hills Community Library
Selling fast
Coltrane at 100: The Coltrane Legacy
Sat, Nov 14, 3:00 PM
Caledonia · Half Hollow Hills Community Library
Celebrating Transplant and Cellular Therapy: Past, Present & Future (2026)
Tue, Nov 3, 6:00 PM
Central Syosset · Crest Hollow Country Club
Celebrating Transplant and Cellular Therapy: Past, Present & Future (2026)
Tue, Nov 3, 6:00 PM
Central Syosset · Crest Hollow Country Club
Join the Conversation: What’s Next for the Economy?
Tue, Nov 10, 7:00 PM
Head of the Harbor · Charles B. Wang Center
Join the Conversation: What’s Next for the Economy?
Tue, Nov 10, 7:00 PM
Head of the Harbor · Charles B. Wang Center
Sales end soon
NYSF Spooky Happenings Market
Saturday at 12:00 PM
West Side · 759 Long Island Ave
Sales end soon
NYSF Spooky Happenings Market
Saturday at 12:00 PM
West Side · 759 Long Island Ave
Sphere of Influence and Past Client Marketing Mastery
Wed, Oct 28, 3:00 PM
Lower Melville · 40 Marcus Dr suite 250
Sphere of Influence and Past Client Marketing Mastery
Wed, Oct 28, 3:00 PM
Lower Melville · 40 Marcus Dr suite 250
Almost full
Off the Bay & Out of the. Coffin
Saturday at 9:00 PM
Sayville · Off The Bay
Almost full
Off the Bay & Out of the. Coffin
Saturday at 9:00 PM
Sayville · Off The Bay
Almost full
Heal Your Relationship with Money Holiday Edition
Wed, Nov 11, 6:30 PM
Deer Pen · 122 W Main St
Almost full
Heal Your Relationship with Money Holiday Edition
Wed, Nov 11, 6:30 PM
Deer Pen · 122 W Main St
Almost full
TLE Massapequa Trunk or Treat
Saturday at 2:00 PM
Nassau Shores · 5795-5811 Merrick Rd
Almost full
TLE Massapequa Trunk or Treat
Saturday at 2:00 PM
Nassau Shores · 5795-5811 Merrick Rd
Herald Senior Health and Beyond Expo: Commack
Sun, Nov 22, 9:00 AM
Candy Section · SYJCC
Herald Senior Health and Beyond Expo: Commack
Sun, Nov 22, 9:00 AM
Candy Section · SYJCC
STEM•X Festival 2026
Sat, Oct 31, 10:00 AM + 1 more
Downtown Uniondale · Cradle of Aviation Museum
STEM•X Festival 2026
Sat, Oct 31, 10:00 AM + 1 more
Downtown Uniondale · Cradle of Aviation Museum
Sales end soon
Secrets of the Boulevard: Kings Park State Hospital – Main Hospital Tour
Saturday at 10:00 AM
San Remo · Nissequogue River State Park
Sales end soon
Secrets of the Boulevard: Kings Park State Hospital – Main Hospital Tour
Saturday at 10:00 AM
San Remo · Nissequogue River State Park
Sales end soon
Halloween Splash or Treat at Saf-T-Swim Commack
Saturday at 3:30 PM
Candy Section · Saf-T-Swim of Commack
Sales end soon
Halloween Splash or Treat at Saf-T-Swim Commack
Saturday at 3:30 PM
Candy Section · Saf-T-Swim of Commack
Almost full
Hunt for Bigfoot 2: Electric Boogaloo, Adult Program, $4 upon arrival
Sat, Oct 31, 10:30 AM
Fort Salonga · Sunken Meadow State Park Lot 3
Almost full
Hunt for Bigfoot 2: Electric Boogaloo, Adult Program, $4 upon arrival
Sat, Oct 31, 10:30 AM
Fort Salonga · Sunken Meadow State Park Lot 3
Sales end soon
Drop-off and PaintShare™ Giveaway - Farmingdale State College
Saturday at 8:00 AM + 7 more
Lower Melville · Farmingdale State College
Sales end soon
Drop-off and PaintShare™ Giveaway - Farmingdale State College
Saturday at 8:00 AM + 7 more
Lower Melville · Farmingdale State College
Sales end soon
BINGO For A Cause
Today at 6:00 PM
Biltmore Shores · Bar Grazie
Sales end soon
BINGO For A Cause
Today at 6:00 PM
Biltmore Shores · Bar Grazie
Reformed and Reforming: Retired Clergy Gathering
Thu, Nov 5, 9:00 AM
West Side · Ascension Lutheran Church, Deer Park
Reformed and Reforming: Retired Clergy Gathering
Thu, Nov 5, 9:00 AM
West Side · Ascension Lutheran Church, Deer Park
Hauppauge Workshop: Demystifying the Civil Service Merit System
Tue, Oct 27, 10:00 AM
Stonebridge at Smithtown · Suffolk County Labor Department
Hauppauge Workshop: Demystifying the Civil Service Merit System
Tue, Oct 27, 10:00 AM
Stonebridge at Smithtown · Suffolk County Labor Department

Trends in Islip

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Frequently asked questions about Islip

What are the best free events to attend?

According to Eventbrite, the best free events are:

Stew Leonard's Trick or Treat

Ribbon Cutting Ceremony for Kings Park

Coltrane at 100: The Coltrane Legacy

Celebrating Transplant and Cellular Therapy: Past, Present & Future (2026)

Which events are currently trending in Islip?

The trending searches this month in Islip are:

halloween event

chinese auction

Which free events are coming up?

Discover the best free events happening soon – you don't want to miss them:

BINGO For A Cause

Drop-off and PaintShare™ Giveaway - Farmingdale State College

2nd Annual Mopar & More Car Show

Secrets of the Boulevard: Kings Park State Hospital – Main Hospital Tour