Turning 40 is a milestone worth celebrating in style. Whether you’re planning for yourself, a friend or family, choosing the perfect theme sets the tone and makes the day unforgettable. I’ve pulled together 40 solid 40th birthday party themes that cover everything from classy adult vibes to funny, quirky ideas to options for him, for adults and unique twists you won’t see coming.
READ: 8 Best Ever Party Theme Ideas for Black Girls
Here we go.
1. Elegant black and gold party
Classic, sophisticated and forever stylish. Think black tablecloths, gold cutlery and shimmering decorations. This theme suits adults who want a touch of luxury. You can even add a dress code: black tie or cocktail attire to make everyone feel special. Gold balloons with “40” and black candles will bring the vibe alive.
2. Retro 80s throwback
Celebrate the era when the birthday star was born! Invite guests to don neon colours, leg warmers and teased hair. Play iconic 80s hits and decorate with vinyl records and cassette tapes. This theme is both nostalgic and energetic, guaranteed to get everyone dancing.
3. Tropical Luau
Bring the beach vibes indoors with bright floral prints, tiki torches and fruity cocktails served in coconuts or pineapples. Guests can wear Hawaiian shirts or grass skirts. It’s a laid-back, fun way to escape the everyday and celebrate under colourful umbrellas.
4. Wine tasting evening
Perfect for wine lovers, set up tasting stations with a variety of reds, whites and rosés. Pair with cheese, crackers and charcuterie boards. Add some elegant lighting and soft jazz for a relaxed, grown-up evening focused on good company and great flavours.
5. Casino night
Transform your venue into a mini Vegas with blackjack tables, roulette and poker chips. Use fake money for fun prizes. Dress code can be formal or “James Bond” style to add a glamorous edge. It’s an exciting theme that keeps guests entertained and engaged.
6. Garden tea party
For a softer, elegant vibe, host an outdoor tea party with vintage china, pastel decorations and fresh flowers. Serve finger sandwiches, scones and tea varieties. Guests can wear hats and gloves to match the theme, making for charming photos and a graceful celebration.
7. Movie marathon
Choose the birthday person’s favourite films and create a cozy viewing area with popcorn, blankets and themed snacks. Whether it’s classics, comedies or superhero flicks, this theme is perfect for low-key fun with close friends and family.
8. Great Gatsby / Roaring 20s
Flappers, pearls and jazz music bring this era back to life. Encourage guests to dress in vintage attire and decorate with feathers, gold accents and art deco patterns. A champagne tower or classic cocktails like the Sidecar complete the mood.
9. 40th Birthday BBQ bash
Nothing says celebration like good food and fresh air. Host a backyard barbecue with burgers, ribs and plenty of sides. Add string lights and casual seating. This theme is perfect for informal gatherings with friends and family who love to eat, chat and enjoy the sunshine.
10. Travel around the world
Celebrate 40 years of adventure with decorations, food and drinks inspired by different countries. Create “stations” representing places the birthday person has visited or wants to go to. It’s fun, educational and lets everyone enjoy international flavours.
11. Disco fever
Shiny disco balls, funky music and retro dance moves make this a lively party theme. Encourage guests to wear bell bottoms and platform shoes. The dance floor should be the main focus. Don’t forget to create a killer playlist of 70s disco hits.
12. Masquerade ball
Add mystery and glamour with a mask-required party. Rich colours like deep purple, black and gold set the tone. Provide masks for guests or ask them to bring their own. The atmosphere is elegant, with a hint of intrigue.
13. Comedy night
Bring laughs to the centre stage with a stand-up comedy theme. Hire a local comedian or have guests share funny stories about the birthday person. Include humorous 40th birthday sayings on decorations and invites. This theme guarantees smiles and good vibes.
14. Sports fanatic party
Celebrate with a theme centred on the birthday person’s favourite sport or team. Decorate with jerseys, balls and banners. Serve stadium-style snacks like hot dogs and popcorn. You can even organize friendly games or competitions.
15. Spa day
For a relaxing celebration, bring the spa to your home or book a spa venue. Think scented candles, face masks, massages and healthy snacks. This theme is a perfect way to unwind and feel pampered while marking the milestone.
16. Around the campfire
Host a cozy evening with a fire pit, blankets and s’mores. Tell stories, roast marshmallows and enjoy warm drinks. This intimate, rustic theme is great for smaller gatherings and brings everyone closer.
17. Hollywood Red carpet
Make everyone feel like a star. Roll out a red carpet, set up a photo booth with props and encourage glamorous attire. Hand out awards for categories like “Best Dressed” or “Funniest Guest.” This theme mixes fun with high-class flair.
18. 40th Birthday themes for Him: Gentleman’s Whiskey tasting
A sophisticated party centred around fine whiskies. Offer a selection of single malts, blends and bourbons. Complement with cigars, dark chocolates and classic jazz music for a memorable night.
19. Nautical theme
Anchor your party in seaside charm with navy and white decor, anchors and shells. Think sailor hats and boat-inspired snacks. This theme is refreshing and perfect for summer birthdays.
20. Bohemian chic
Go for relaxed elegance with flowing fabrics, fairy lights and lots of plants. Mix and match cushions and rugs for a laid-back vibe. Perfect for outdoors or a bright indoor space.
21. Vintage tea party
Serve classic teas with delicate pastries and vintage crockery. Add lace tablecloths and floral centrepieces. A refined and charming theme that’s ideal for smaller, intimate celebrations.
22. Funny 40th birthday party themes: “Over the Hill”
Play on the classic “over the hill” joke with decorations featuring canes, walkers and tombstones marked “RIP youth.” It’s cheeky, playful and sure to get laughs from close friends.
23. Tropical jungle
Create a lush atmosphere with lots of greenery, animal prints and tropical fruits. Add some ambient jungle sounds and vibrant colours to energize the party space.
24. Mardi Gras masquerade
Add beads, masks and plenty of purple, green and gold. Include jazz music and Cajun food for a lively, festive atmosphere.
25. Black light party
Use UV lighting and neon decorations to make everything glow. Guests can wear white or neon outfits. It’s playful, modern and perfect for night owls.
26. Rock ‘n’ Roll
Decorate with guitars, vinyl records and band posters. Play classic rock anthems and encourage leather jackets and band tees.
27. Retro Video game night
Set up gaming stations with classic consoles. Include themed snacks and decorations based on favourite games like Mario, Pac-Man or Zelda.
28. Carnival or circus theme
Bright colours, popcorn machines and circus acts create a festive vibe. Add games like ring toss or face painting for extra fun.
29. 40th Birthday themes for adults: Cocktail party
A chic, grown-up evening with stylish drinks, finger foods and a lounge vibe. Hire a mixologist for signature cocktails or DIY bars.
30. Mediterranean escape
Use blues, whites and terracotta colours with olive branches and Mediterranean food. The relaxed, sunny vibe transports guests to a Greek island.
31. Arabian nights
Rich fabrics, lanterns and spices set a magical mood. Serve Middle Eastern treats and teas. It’s exotic and perfect for a memorable celebration.
32. Rustic barn party
Think wooden tables, fairy lights and country food. This cozy theme is great for outdoor venues or rustic indoor spaces.
33. 40th Birthday sayings theme
Use popular sayings about turning 40 as inspiration for decorations and invites. Phrases like “Fabulous at 40” or “40 & Fabulous” create a positive, celebratory tone.
34. Vintage glamour
Combine retro fashion with glittering decor and classic cocktails. Think Old Hollywood meets modern flair.
35. Disco Ball dance party
Bring back the disco ball and funky tunes. Encourage dancing all night and retro outfits.
36. Hollywood horror
A fun twist for fans of spooky movies. Mix glamour with gothic decor, creepy props and horror movie trivia.
37. Parisian café
Create a chic French bistro with café tables, string lights and croissants. Add a playlist of French jazz for ambience.
38. Beach bonfire
If near the coast, a bonfire party with beach games and marshmallow roasting is unbeatable.
39. Garden glow party
Use lots of fairy lights and lanterns to create a magical outdoor setting. Add comfortable seating and soft music.
40. Unique 40th Birthday party themes: Mystery dinner
Guests solve a murder or mystery while enjoying dinner. This interactive party is engaging and fun for groups.
40th Birthday sayings to use
Here are some sayings to inspire your invites or decor:
“40 & Fabulous!”
“Cheers to 40 Years”
“Over the Hill and Still thriving”
“Vintage 1985: Aged to Perfection”
“Forty and Fearless”
Struggling to pick the perfect theme? Your 40th birthday party should be about you. Your style, your vibe. Take a moment, think about what feels fun and true to you and use this list as your launchpad.
Little Q & A
Q: What are some funny 40th birthday party themes?
A: Think “Over the Hill,” “Midlife Crisis,” or “Dad Jokes & Puns.” These themes bring humor to the milestone without being cringey.
Q: What’s a unique 40th birthday party theme?
A: Try “Travel the World,” “Silent Disco,” or “Murder Mystery” for an unexpected twist.
Q: What are some 40th birthday party themes for him?
A: Sports Fanatic, Whiskey Tasting, BBQ & Brews or Classic Car Show work really well.
Ready to plan your perfect 40th?
Thinking about party supplies or decor? Check out these items for some stylish, affordable picks to make your day pop.
Want to see your favorite theme featured next time?
Drop your best party ideas in the comments below. I’m always looking for fresh inspiration to share.
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