301.633.6719 hello@oneilevents.com

O'Neil Events

Your Trusted DC Wedding Planner

 

Elegant, Seamless, and Guest-Focused

Your Trusted DC Wedding Planner 

Elegant, Seamless, and Guest-Focused

Planning a wedding in Washington, DC comes with its own challenges — from family expectations to navigating permits and out-of-town guests. At O’Neil Events, we specialize in creating elegant, timeless celebrations that honor tradition while reflecting your personal style. With 15+ years of experience as a DC wedding planner, we’re here to make sure your planning feels calm, organized, and stress-free.

You’re juggling careers, family input, and way too many details

Most DC couples we work with are managing demanding jobs, out-of-town guests, and family members who (lovingly) want to weigh in on every decision. Add in the logistics of multi-day events — rehearsal dinners, ceremonies, brunches — and the stress can build fast.

You don’t want to spend your engagement buried in spreadsheets or worrying if someone remembered the transportation schedule. And you definitely don’t want your parents or friends running around troubleshooting on your wedding day.

What kind of help are you leaning towards?

“Working with O’Neil Events was the best thing I did to plan my wedding! Colleen and her team are incredible- she made the entire wedding process seamless and smooth! Colleen helped turn my visions into a reality for my wedding- she is beyond organized and kept me on track while planning through it all! We couldn’t be more thankful O’Neil Events! You will not be disappointed!”

– Layla

O'Neil Events has been featured in Bethesda Magazine. O'Neil Events has been featured in Style Me Pretty. O'Neil Events has been featured in Charm City Wed. O'Neil Events has been featured in Washingtonian. O'Neil Events has been featured in United with Love. O'Neil Events has been featured in The New York Times. O'Neil Events has been featured in Tassels & Tastemaker. O'Neil Events has received many awards from organizations such as WeddingWire and TheKnot.     

We’re your calm in the chaos.

As a DC wedding planner, we know the ins and outs of the city — from iconic venues on the Hill to tucked-away Georgetown gardens. We’ve built strong vendor relationships and mastered the details so you don’t have to.

With O’Neil Events, you’ll:

Save time with curated, trusted vendor recommendations.

Feel supported with calm, honest guidance (we’ll tell you what’s worth it, and what’s not).

Keep family dynamics smooth with a steady hand managing behind the scenes.

Celebrate fully, knowing your guests are cared for and every event flows seamlessly.

 

We offer two clear paths: Full-Service Wedding Planning for couples who want a partner from day one, and Month-of Coordination for couples who want to hand things off when it matters most.

Hi, I’m Colleen —

Born & Raised Washingtonian, Calm Under Pressure

 

I know DC like the back of my hand. From Capitol Hill venues to private estates in Potomac, I’ve planned it all. I bring local expertise, trusted vendor relationships, and the kind of calm presence you’ll want in the room when timelines and family dynamics collide.

Before weddings, I was a Division I lacrosse player — so yes, I thrive under pressure, know how to run a team, and will always keep things moving with strategy and grace. Combine that with over 15 years of planning experience, and you’ve got someone who knows how to balance elegance with practicality.

✨ Fun Facts:

I run on Diet Coke (large, always).

Dessert is non-negotiable — every meal deserves it.

I’ll plan your rooftop photo session but won’t look down (heights are not my thing).

My toddler and cats keep me on my toes — and remind me daily that staying calm matters.

Shoes are my love language (hence the background photo)

SO SWEET & CARING

My husband and I said SEVERAL times how having Colleen by our side as a Day Of Planner was way beyond worth the money spent. If I have one recommendation for any newly engaged couples, it’s have a day of planner. From the beginning just getting coffee with us and helping us start the process or planning, to every living detail of the day of… I can’t imagine our big day without her. She was immensely professional. So sweet and caring; yet I knew she’d get done what needed to be done. She’s no pushover! Monthly emails and check ins were lovely and kept us on track. But then the month leading up to the wedding, Colleen took everything off my plate and handled all the logistics and vendors and timelines.

So, so valuable. Thank you for everything you did! We’ll both never stop raving about you. 🙂

{Amy}

THE FAIRYTALE I DREAMED OF

O’Neil Events came highly recommended to us by our caterer, and hiring them was one of the best decisions we made for our wedding!  Yvi & Colleen were both responsive via email and easy to work with. The month of our wedding, Yvi took everything over and was positively wonderful! She contacted all of my vendors and was able to coordinate things behind the scenes that I didn’t even know about. If anything went wrong, I was completely oblivious to it because it was handled! She was organized and on top of everything that day and helped to create the fairy tale I had dreamed of!

If there’s one piece of advice I will give to any future bride who asks, it is the value of hiring an excellent day-of-coordinator. Our wedding party and families (as well as us) were able to just relax and enjoy taking in the entire day with the knowledge that Yvi had everything handled. I definitely gained a new friend through the experience!

{Megan}

WE WERE IN SUCH GREAT HANDS

From the minute we met our wedding coordinator, we knew she would be our biggest ally on our wedding day. But we owe her a debt of gratitude for just how much she did — before, during, and after. Everything we conceptualized came to fruition because of her, and never did we feel like we were flying solo. She championed our whims while making sure everything was practical and achievable.

We were in such caring, diligent hands, even when it came to things we forgot, She handled everything with ease, grace, and most incredibly, a smile on her face. She kept everyone in line from start to finish, vendors and family members and the bridal party. Her energy, her excitement, her sheer passion for what she does helped us create and execute a truly perfect day.

{Nick}

The Absolute Best!!

Working with O’Neil Events was the best thing I did to plan my wedding! Colleen and her team are incredible – they have a calming, efficient, and professional communication style. Colleen and her team are incredibly knowledgeable, organized, and provided incredible value. She kept us organized from the beginning of the planning process through the entirety of the event, making sure everything ran smoothly. She coordinated with our vendors and did not miss a beat on anything. She thought of everything and ensured the planning process remained fun and not stressful at all. We couldn’t be more thankful for O’Neil Events – you will not be disappointed!

Fabulous Wedding Planner!

From the moment we booked O’Neil Events, we knew we were in amazing hands. Colleen and her team were incredibly professional, attentive, and caring throughout the entire planning process. They worked efficiently to create an individualized and organized experience for us. Colleen connected with us regularly to ensure we had an effortless planning experience, and our day-of coordinator, Yvi, was simply phenomenal – she brought us appetizers and made sure we had a moment to ourselves when we really needed it. I cannot recommend Colleen and her team at O’Neil Events highly enough!

You want a wedding that feels intentional, welcoming, and stress-free

You’re here because:

You want to celebrate with family and friends, not manage logistics

You want a planner who understands DC’s venues, permits, and vendors

You want someone who can balance tradition with your modern vision

You want peace of mind knowing your guests will feel cared for from start to finish

That’s exactly what we deliver.

Your DC wedding, handled with elegance and ease

We’re currently booking:

2026 weddings: limited dates remaining

2027 weddings: now open

Let’s make your wedding seamless, stress-free, and unforgettable — so you can focus on what matters most.

ABOUT

O’Neil Events is a trusted DC and NYC wedding and event planner, known for elegant weddings, seamless corporate events, and stylish social celebrations — all delivered with calm expertise.

Couples, companies, and families across Washington DC and New York City count on us for personalized celebrations and flawless coordination delivered with calm expertise (and just the right dash of personality).

We are honored to be able to work with such talented photographers. Here are some photographers who have been featured on this website: getreadyphoto.com, ootwig.com, barbarahperttula.com, carlyrosephotography.com, hunterryanphoto.com, laurenlouisecollective.com, sarahbradshaw.com, photographydujour.com, lovelifeimages.com, kellylossphoto.com, mantasphoto.com, katymurrayphotography.com, kylajeanette.com.