Boulder's largest lost and found network

Lost or found something in Boulder?

Report something lost or found and let our community help reunite it with their owners

How it works

Getting your lost item back or helping someone else is simple with our 3-step process

1. Post your item

Create a free listing with photos and details about your lost or found item. Our spam protection keeps the community safe.

2. Community helps

Our network across Boulder search and match lost items with found ones. Get notified when there's a potential match.

3. Get reunited

Connect directly with the person who found your item or claim the item you found. Arrange a safe meetup and celebrate the reunion!

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Search through thousands of lost and found items across Boulder

Recently reported

LOST

Gold 14k solitaire diamond ring with initials

I lost my gold 14k solitaire diamond ring yesterday around 3pm near the Pearl Street Mall, outside the Boulder Book Store on Pearl Street. It's a slim 2mm band with a tiny round diamond that still shines in the sun, and the inside is engraved with the initials 'RP'. The ring means a lot to me — it was a gift from my grandmother and carries real sentimental value. I’ve retraced my steps along the Pearl Street Mall and the Boulder Creek Path, but I must have dropped it somewhere between the storefronts and the bus stop. If anyone found it, I’d really appreciate getting it back.

Boulder
Feb 20, 2026
LOST

Black North Face jacket with orange zipper pull

I lost my black North Face jacket with an orange zipper pull yesterday around 3pm near the Pearl Street Mall, outside the Boulder Book Store on Walnut Street. It's a size M, a bit worn from daily use, with a tiny fox embroidered on the left sleeve and a small scratch near the left pocket. It was a gift from my mom, so it feels really sentimental and I’m really hoping it turned up with someone who picked it up by mistake. If you found it, please reach out—I'd be grateful to get it back!

Boulder
Feb 13, 2026
LOST

Brass compass with initials engraved

Lost my small brass compass yesterday around 3pm near the Pearl Street Mall entrance by the Boulder Creek path under the 9th Street pedestrian bridge. It's the size of a car key, with a warm patina and a tiny dent on the rim. On the back, someone engraved the initials 'A.J.' and a red thread is tied to the ring. It means a lot to me for upcoming weekend hikes; it's a reminder of my dad who gave it to me. If anyone picked it up, please drop it off somewhere safe or message me; I really need it back.

Boulder
Feb 08, 2026
LOST

Pacific Blue iPhone 12 Pro in mint-green case

I lost my Pacific Blue iPhone 12 Pro yesterday around 3pm, somewhere along Pearl Street Mall in Boulder near the Starbucks on 1000 Pearl Street. It’s in a mint-green silicone case and has a small cat sticker on the back. The screen has a faint crack at the top-right corner, and there's a tiny dent along the bottom edge. This phone is important to me—it’s how I coordinate with family and manage work, and I really need it back.

Boulder
Jan 24, 2026
LOST

Pink unicorn plush toy, lost near Pearl Street Mall

Category: Children's Toys & Games. I lost my pink unicorn plush toy yesterday around 3:15 pm near the Pearl Street Mall entrance by the Boulder Book Store. It's about 12 inches tall, with a white body, a pastel pink mane and tail, and a tiny rainbow ribbon around its neck. There's a blue star patch on its left ear and a small crease along the back seam from a tumble last week. It was a gift to my daughter, and it has sentimental value—I'm really hoping to get it back.

Boulder
Jan 24, 2026
FOUND

Nintendo Switch OLED neon red/blue found near Pearl Street Mall

I found a Nintendo Switch OLED this afternoon around 2:15pm behind the Boulder Book Store on Pearl Street Mall. It's the neon red/blue Joy-Con model with a white dock, tucked inside a gray silicone case, and it has a peeling 'Sunset City' sticker on the back. There are a few faint scratches on the screen protector and a tiny dent on the bottom edge, otherwise the device looks in decent shape. I figured someone must be missing it and I'd rather help get it back to its owner than hold onto it.

Boulder
Feb 06, 2026
FOUND

Navy Calvin Klein tuxedo jacket with satin lapels

I found a navy Calvin Klein tuxedo jacket this afternoon around 3:40pm on the Pearl Street Mall, outside the Boulder Book Store. It's a men's size L, in good condition with clean satin lapels and a single back vent. The inside pocket has a small red crest stitched on the lining and there’s a tiny fray on the left sleeve cuff. It was dropped near a wedding party crowd; I figured someone rushing to a formal event might be worried. If this sounds like yours, I’d love to help you get it back—I know how important a good blazer can feel for a big night.

Boulder
Jan 31, 2026
FOUND

Black Ray-Ban Wayfarer glasses found

I found a pair of black Ray-Ban Wayfarer-style glasses this afternoon around 3:15 pm on Pearl Street Mall, right outside the Boulder Book Store near the 14th Street intersection. They're black matte plastic frames with a slim gold-tone bridge, medium size, and a tiny engraving 'AH' on the inside of the right temple. There's a small scratch on the left lens, and they came with a blue faux-leather case that's a bit worn around the zipper. If the owner can describe the engraving or the case, I'd love to return them to you.

Boulder
Dec 16, 2025
FOUND

Full-size violin in black case; Stentor Student II

I found a full-size violin this morning around 9:15am on the Pearl Street Mall, behind the Boulder Book Store near the creek path. It's a Stentor Student II violin, with a warm golden-brown varnish and a few light scratches on the back of the neck. The case is a black hard-shell with red velvet interior, a scuffed latch, and a small dent on the bottom edge. The bow hair looks intact but the tip is slightly worn. Inside the lid there's a blue Colorado Youth Orchestra sticker and the bow is engraved with 'A.R.' on the frog. I picked it up because I figured someone might be missing it and it means a lot to the player who owns it—hope to reunite it with its owner soon.

Boulder
Dec 10, 2025
FOUND

Found black drawstring bag with mountain logo containing personal items near Chautauqua Park, Boulder.

I found a black drawstring bag with a mountain logo on it while hiking near Chautauqua Park in Boulder. It looked fairly new and had some personal items inside, like a water bottle and a small notebook. There wasn't any contact info in it, so I'm hoping to find the owner!

Chautauqua Park, Boulder, CO, United States
Oct 29, 2025