Besides gaining reputation with your questions and answers, you receive badges for being especially helpful. Badges appear on your profile page, flair, and your posts.

Question Badges

First bounty you manually award on another person's question
65 awarded
First bounty you manually award on your own question
361 awarded
Ask a well-received question on 5 separate days, and maintain a positive question record
1.7k awarded
Ask a well-received question on 30 separate days, and maintain a positive question record
139 awarded
Ask a well-received question on 100 separate days, and maintain a positive question record
6 awarded
Question favorited by 25 users
31 awarded
Question favorited by 100 users
1 awarded
First bounty you offer on another person's question
122 awarded
Question score of 10 or more
1.2k awarded
Question score of 25 or more
182 awarded
Question score of 100 or more
6 awarded
Question with 1,000 views
18.7k awarded
Question with 2,500 views
7.7k awarded
Question with 10,000 views
1.2k awarded
First bounty you offer on your own question
685 awarded
Ask a question and accept an answer
9k awarded
First question with score of 1 or more
15.9k awarded

Answer Badges

First to answer and accepted with score of 10 or more
963 awarded
Edit and answer 1 question (both actions within 12 hours, answer score > 0)
296 awarded
Edit and answer 50 questions (both actions within 12 hours, answer score > 0)
9 awarded
Edit and answer 500 questions (both actions within 12 hours, answer score > 0)
2 awarded
Provide non-wiki answers of 15 total score in 20 of top 40 tags
25 awarded
Accepted answer and score of 40 or more
87 awarded
Answer score of 5 or more to a question score of -2 or less that goes on to receive a score of 2 or more
13 awarded
Answer score of 20 or more to a question score of -3 or less that goes on to receive a score of 3 or more
Answer score of 10 or more
2.4k awarded
Answer score of 25 or more
365 awarded
Answer score of 100 or more
10 awarded
Highest scoring answer that outscored an accepted answer with score of more than 10 by more than 2x
14 awarded
Answer more than 30 days after a question was asked as first answer scoring 2 or more
2.4k awarded
Answer a question more than 60 days later with score of 5 or more
1.4k awarded
Answer your own question with score of 3 or more
880 awarded
Answer a question with score of 1 or more
9.4k awarded
Zero score accepted answers: more than 5 and 20% of total
178 awarded
Zero score accepted answers: more than 10 and 25% of total
52 awarded

Participation Badges

Complete "About Me" section of user profile
15.4k awarded
Visit an election during any phase of an active election and have enough reputation to cast a vote
347 awarded
Vote for a candidate in the final phase of an election
203 awarded
Leave 10 comments
3.7k awarded
Leave 10 comments with score of 5 or more
6 awarded
Visit the site each day for 30 consecutive days. (Days are counted in UTC.)
465 awarded
Visit the site each day for 100 consecutive days. (Days are counted in UTC.)
131 awarded
Earn at least 200 reputation (the daily maximum) in a single day
96 awarded
Earn 200 daily reputation 50 times
1 awarded
Earn 200 daily reputation 150 times
Followed the Area 51 proposal for this site before it entered the commitment phase
46 awarded
Voted 10 times, added 3 posts score > 0, and visited the site on 3 separate days during the private beta
54 awarded
One post with score of 2 on meta
241 awarded
10 posts with score of 2 on meta
26 awarded
Post 10 messages, with 1 or more starred, in chat
42 awarded
Post 10 messages in chat starred by 10 different users
Active member for a year, earning at least 200 reputation
5.7k awarded

Tag Badges

You must have a total score of 100 in at least 20 non-community wiki answers to achieve this badge.
372 awarded
You must have a total score of 400 in at least 80 non-community wiki answers to achieve this badge.
54 awarded
You must have a total score of 1000 in at least 200 non-community wiki answers to achieve this badge.
16 awarded

Moderation Badges

First flagged post
1.5k awarded
Raise 80 helpful flags
197 awarded
Raise 500 helpful flags
50 awarded
Vote 300 or more times
165 awarded
First rollback
208 awarded
Served as a pro-tem moderator for at least 1 year or through site graduation
4 awarded
Served as an elected moderator for at least 1 year
5 awarded
First down vote
1.6k awarded
Complete at least one review task. This badge is awarded once per review type
2.4k awarded
Complete at least 250 review tasks. This badge is awarded once per review type
134 awarded
Complete at least 1,000 review tasks. This badge is awarded once per review type
46 awarded
Delete own post with score of 3 or higher
28 awarded
First edit
11.5k awarded
Edit 80 posts
56 awarded
Edit 500 posts (excluding own or deleted posts and tag edits)
17 awarded
Vote on 600 questions and 25% or more of total votes are on questions
46 awarded
Edit first post that was inactive for 6 months
850 awarded
Edit 100 posts that were inactive for 6 months
13 awarded
First retag
635 awarded
Delete own post with score of -3 or lower
260 awarded
Approve or reject 100 suggested edits
57 awarded
Up vote 100 answers on questions where an answer of yours has a positive score
12 awarded
Use 30 votes in a day
164 awarded
First up vote
10k awarded
First approved tag synonym
9 awarded
First tag wiki edit
149 awarded
Edit 50 tag wikis
6 awarded
Create a tag used by 50 questions
151 awarded
Use the maximum 40 votes in a day
121 awarded

Other Badges

Share a link to a question later visited by 25 unique IP addresses
542 awarded
Share a link to a question later visited by 300 unique IP addresses
19 awarded
Share a link to a question later visited by 1000 unique IP addresses
2 awarded
Completed the annual Stack Overflow survey; your responses are anonymous
34 awarded
Read the entire tour page
5.3k awarded

Retired Badges

Visited every section of the FAQ
305 awarded
Provide an answer of +20 score to a question of -5 score
Asked a question with zero score, no answers, no comments, and low views for a week
8k awarded