Yoga teachers in Mysore

Ashtanga Vinyasa Grand Guru Patthabi Jois, or Guruji as his students usually call him, hardly needs an introduction, for he is now one of the world’s most famous yoga teachers. After many years in his old shala in Laksmipuram, eighty eight year old Patthabi Jois, now operates from a new yoga shala, with a large and bright practice space in the well-to-do suburb of Gokalam.
All levels, from the absolute beginner to the most advanced returning practitioner are catered for. Practice begins at 6am with space for about 25-30 students at a time.  As the first group finishes up the next fills the spots. If you like to watch others practicing you may sit there for an hour, otherwise wait time is usually less than 20 minutes.  Teaching here is the traditional “Mysore” style or self practice. Every student learns the sequence of postures at their own pace. If you are new to the practice and do not know the sequence or have difficulty in poses, you will receive attention as is required. Those more familiar with the series will be let practice on. Practice is normally every morning except Saturdays, full and new moon days and Hindu festivals.
The monthly fee is US$350 with an additional $200 registration fee the first month you come, so you pay $550 for the first month and $350 for every month after that. To get the most out of your time there, a three month stay is recommended. You can register from 4:30-5:30pm, Monday to Friday. Bring a passport photo. Though many people just turn up, if you intend to study at the Ashtanga Research Institute, it is polite to send a letter stating when you will be arriving and for how long you intend to study. Note that Patthabi Jois now demands that people studying with him do not to study any yoga related course with any other teacher  for the time they are in Mysore.

Although he has been teaching in Mysore since 1994, it's only a few years ago that a few westerners discovered  Sheshadri, a kind and generous man in his fifties.
A former student of BNS Iyengar, Sheshadri teaches ashtanga vinyasa at the Mysore Mandala Yoga Shala (opposite the Sudharma house). He gives instructions in broken English, demonstrates postures (perhaps too often: he was an international yoga champion) and gives strong but sensitive adjustments. Practice is every day except Moon days. Other courses on offer include a comprehensive pranayama course and a krya course. A one month course will set you back Rs 7000. 
Note that Sheshadri's classes are the only place  in Mysore where you can "drop in" and pay by the class (all the other teachers ask you to commit for at least one month).
See the Mysore Mandala website for more details.