Fireworks on the Monday of the May 20 weekend (This year it is on the 20th of May) is a Canadian tradition, often called 
"Firecracker Day".   Usually a combination of fireworks displays put on by local towns and cities and ones you purchase for the backyard.

British Columbia Fireworks,  Ontario Fireworks,  Quebec Fireworks

ONTARIO CANADA

Fireworks Toronto GTA

Fireworks display at Ashbridge's Bay

Canada's Wonderland will be lighting off 4000 fireworks this Victoria Day Weekend. Over 4000 explosions and custom fireworks designed just for Canada’s Wonderland, set to a soundtracks of your favorite hits. Don't miss out on these annual shows!

Fanshaw Conservation Area near London

Fanshawe Optimist Fireworks Display - May 21, at duskSee the largest fireworks displays in the London area! Arrive early to get that good viewing spot.  Book London area hotels or camp on site.

Hamilton Ontario

Organized fireworks display on May 20, 2013 Victoria Day Fireworks, Dundas Driving Park. City of Hamilton organizes this fire works event
Stay overnight in Hamilton Hotels

Niagara Falls Weekend Fireworks
Watch the firworks over the falls Niagara Falls.  
Stay overnight in Niagara Falls Hotels

Virgil-Niagara on the Lake Fireworks

More than 40 years ago, a group of neighbours in Virgil got together to organize fireworks for Victoria Day, as still occurs today in many neighbourhoods. But these families went on step further, providing pony rides for the kids. That celebration on the grounds of the Virgil Public School grew to what has become the Virgil Stampede, with something new added each year — this year, better than ever. See Virgil for Fireworks

Fireworks North of Toronto GTA

North, Northeast and Northwest of Toronto

Kick off the unofficial first long weekend of the summer with a trip north of Toronto to cottage country Best Victoria Day Places to Party North of Toronto on May 24 Weekend to one of the many Ontario resort destinations celebrating Queen Victoria’s Birthday. Day trips or spring weekend road trips are available for the most budget conscious to those who want to celebrate anniversaries or romantic getaways with a little luxury and pampering. See more than 60 May Getaway options for the May long weekend. 

TayTownship Port McNichol on Georgian Bay

Boating and Beach Getaways over the Victoria Day Weekend at Portarama
Family Festival Port McNichol Ontario. The location of the "port" explains the festival and the excitement over the waters of Georgian Bay as many boaters will be launching for the first time in 2013. Port McNichol sits across from Victoria Harbour. Runs May 16-19 over the Victoria Day Weekend Includes fireworks finale on Saturday May 18. 
 Stay in , Book resorts, inns, hotels and cottages Midland, Port Severn or Barrie. Pick a Family Getaway for the May long weekend.

Canada's Capital on Victoria Day

May 8-24, 2013
Celebrate Victoria Day with us at Queen Juliana Park, at the corner of Carling Avenue and Preston Street. Make a day of it, incorporating Ottawa's beautiful Tulip Festival, in neighbouring Commissioner's Park. This is a family event with something for everyone: midway rides; petting zoo; food, drink, and dessert concessions; buskers; children's activities; and live musical performances (see Events). The festival wraps up with a spectacular FIREWORKS display on Monday, May 20
Stay at Resorts, Inns, Hotels  Ottawa, ON Book Ottawa Hotels ON LINE More information on Ottawa.

Mosport International Raceway

Victoria Day Speedfest Weekend
May 17-19, 2013
Mosport International Raceway kicks off its season with the sights and sounds of thundering GT and Touring cars on the Victoria Day SpeedFest Weekend, May 17-19
The action-packed weekend features the World Challenge Series GT, GTS and Touring doubleheader, the SCCA Trans-Am Series, the Castrol Canadian Touring Car Championship and the classic Sundown Grand Prix. 
Off-track fans can enjoy the annual Victoria Day fireworks which will light up the sky. Camping is a popular part of the Mosport experience and there will also be access to the paddock with driver autograph sessions and meet and greets. Closest town Bowmanville, Ontario where you can book Bowmanville hotels-on-line, or stay in Peterborough. Oshawa, or Port Hope. More on Mossport Raceway.

Victoria Day May long weekend at Blue

Blue Mountain Village, Blue Mountains
May 18-20, 2013
Greet summer on your favorite Village patio! Enjoy live music, face painting, scavenger hunts, hiking, gondola rides, Grove Dancing and the 5th annual Rusty’s Rib Eating contest. PLUS FIREWORKS!
Stay at Resorts, Inns, Hotels Collingwood-Blue Mountain ON, Collingwood-Blue Mountain hotels on-line

Fireworks British Columbia

New Westminster Hyack Festival
May 18 - 26, 2013
Starting on the Victoria Day weekend, at Westminster Quay, the eight -day festival extravaganza starts with a bang – a colourful fireworks display over the Fraser River. All day long, there are rides, entertainment, music, food and shopping. And in the evening,  of May 19 there's the spectacular fireworks display which signals to everyone that nine days of Hyack Festival fun has begun.

More information on British Columbia:  Book BC Hotels New Westminister