The latest break-in happened at the Earth Justice Legal Office on Martin Luther King Boulevard over the weekend.
Police say a thief or thieves have targeted mainly law offices in the downtown area.
Typically, overnight a window is smashed or a door broken in, and computer equipment inside is stolen.
At least 11 offices have been broken into since August.
If you have any information about these robberies, you're asked to call the Tallahassee Police Department at 850-891-4200 or Crime Stoppers at 850-891-HELP.