Can I take the theory exam in English for driving license in Portugal?
According to this site, the exam is in Portuguese but you can get assistance from an interpreter. Here is an excerpt and the emphasis is mine:
The theory test for a Category B licence contains 30 questions to be answered in 35 minutes of which 27 must be correct. There is also an oral Technical Test which lasts 50 minutes. If the candidate is foreign, and does not have sufficient knowledge of Portuguese an Embassy or Consulate accredited interpreter may be taken to the exam.