Here is my guide to Paris’ best Chocolate Boutiques.  I haven’t tried every one myself, but it is my mission to do so. I was in Paris recently and added to my list.  Some of the recommendations for Paris Chocolate Boutiques are from my other chocoholic friends.

A la Petite Fabrique
In this boutique, where they actually make the chocolates, you can choose from some 40 different chocolates, including ganaches, giandujas, bouchées with liqueur, pralines or palet d’or variations. You’ll find chocolate bars that combine cocoa with more than 16 other flavors including tea. They sell an excellent hot chocolate mix to take along home. The aroma of the chocolate is inducement enough to step inside and breathe deep!
Tue-Sat 11am to 7:30pm
11th Arr.
12 rue St-Sabin
Tel: 01 48 05 82 02
Metro: Bastille

Angelina
Famous for their excellent hot chocolate, this centrally located tearoom on the Rue de Rivoli is a tourist hang-out. Now part of the Bertrand Groupe, Angelina’s “Chocolat ala l’Africain,” is a creamy and rich hot drink is so decadent that you will want to take home a box or two of their hot-chocolate mix. There is usually a line to get in.
1st Arr.
226, rue de Rivoli
Tel. (01) 42.60.82.00,
Metro: Tuileries

Chocotruffe
Madame Tissier offers chocolate lovers creations that are associated with certain holidays. She offers very creative chocolates… African masks, and special toy-shaped chocolates for kids. This chocolate boutique is a  favorite of Patricia Wells, who recommends it in her book A Food-Lovers Guide to Paris.
Tue-Sat 10am to 7:30pm
6th Arr.
39 rue du Cherche-Midi
Tel: 01 42 22 49 99
Metro: Sèvres-Babylone

Christian Constant

This chocolate shop and tearoom is located on a residential street near the Luxembourg Gardens. Mr. Constant’s sophisticated chocolates are made with exotic ingredients like ylang-ylang, rose, lavendar and orange water. He is also famous for his tea-infused chocolates, some using Ceylon tea and green tea perfumed with Yemen Jasmine.
6th Arr.
37, rue d’Assas
Tel. (01)53.63.15.15.
Metro: Rennes, St.-Placide.

Debauve & Gallais
For years travelers have flocked to the legendary Debauve & Gallais store on Paris’ Left Bank, filling suitcases with the very best of chocolates. Appointed the official chocolatier to the French court, Debauve & Gallais has since built a following among chocoholics, gourmands, and connoisseurs all over the world. The American website gives you a sample of what awaits in Paris.
7th Arr
30, rue des Saints-Pères

Jean-Paul Hivin
Impeccable chocolates and pastries with packaging in gold and blue. Jean-Paul Hivin also has a delightful tearoom offering salads and sandwiches in a calm setting with Roman-arched windows and wood-paneled walls. The “Longchamp” is their signature pastry made with chocolate praline, hazelnut biscuit, meringue, chocolate and almonds. To guarantee their extreme freshness, the boxes of chocolate are prepared fresh each morning. Each customer is invited to customize his or her box,  choosing an assortment from a vast  selection of Jean-Paul Hivin’s superior chocolates. Click on the website for other locations.
1st Arr.
231, rue St.-Honoré
Tel. (01) 55.35.35.96.
Metro: Concorde, Opera, Tuileries.

La Fontaine au Chocolat
Master Chocolatier since 1948, Michel Cluizel’s is a must for connoisseurs. He has carried on the family tradition in chocolate making from his parents and the shop is now run by Michel’s children. Only top quality ingredients go into the making of the creative and delicious products sold at this Paris chocolate boutique and in others around the globe.
Mon-Sat 10am to 7pm
1st Arr.
201 rue St-Honoré
Tel: 01 42 44 11 66
Metro: Tuileries

La Maison du Chocolat
Founded in 1977 by Robert Linxe, La Maison du Chocolat has expanded from Paris to Tokyo to New York City. The classic hand crafted chocolates are known for their silky-smooth fillings. Try the chocolate bonbons flavored with such interesting ingredients as raspberry, fennel, lemon or thyme. The philosophy of “chocolat without bitterness” has led to the use of only the best cocoa beans and only cocoa butter in the production of the chocolate delicacies. Click on the website to find other locations as well.
9th Arr.
8, boulevard de la Madeleine
Tel. 01 47.42.86.52.
Metro: Madeleine

Michel Chaudun
In this charming shop filled with antique chocolate molds and chocolate-related objects, Mr. Chaudun, a former employee of La Maison du Chocolate, offers superb chocolates with an artisanal bent. He incorporates tiny fragments of toasted, crushed cocoa beans into his chocolate and creates beautiful ganaches such as his ginger ganache infused with tiny grains of candied ginger.
Tue-Sat 9:45am to noon & 1-7:30pm
7th Arr.
149, rue de l’Université
Tel. (01)47.53.74.40.
Metro: Invalides, La Tour Maubourg.

Puyricard
Founded in the small village of Puyricard in the South of France, this chocolatier has been established in Paris for at least 20 years. There are shops throughout France and two in Paris. The shops are decorated with Provençal furnishings reminding you of its origins. There you’ll find a wide range of different candies including ganaches, caramels, and filled chocolates with mocha, marzipan, figs, and more, as well as pralines. They also carry the authentic calissons from Aix-en-Provence.
Mon 2-7pm, Tue-Sat 10am to 7pm
7th Arr.
27 avenue Rapp
Tel: 01 47 05 59 47
Metro: Pont de l’Alma

Also:
6th Arr.
106 rue du Cherche-Midi
Tel: 01 42 84 20 25

Patrick Roger
Patrick Roger is a sculptor of flavors. He travels the world choosing the finest ingredients for his tantalizing and unique chocolates.  Combining unique flavors and textures, he creates chocolate sculptures that will astonish with their delicious subtlety. Look for Patrick Roger Chocolate boutiques across Paris.  Click on the website for more locations.
8th arr.
199 rue du Faubourg Saint Honoré
75008 Paris

Via Chocolat
This chocolate boutique gets its chocolates from regions throughout France. Always searching for a new and creative chocolatier, Via Chocolate offers chocolates from Jérôme Lépinay from Meaux, Sébastien Bouillet from Lyon, Franck Daubos from Versailles, and renowned Pâtissier Stéphane Glacier from Colombes. If you are looking for a grand selection of chocolates and other sweets, try Via Chocolat.
Open: Tuesday to Friday 1:00 pm to 7:30 pm
Saturday 10:30 am to 8:00 pm
December: Monday to Saturday, 10:30 am to 8:00 pm.
5, rue Jean Baptiste Pigalle
9th Arr.
Tel: 01 45 26 12 73

If you have any favorites, that I neglected to mention, let me know. I might have to do some further field testing!