People with the last name Ostaszewski in California
- Alexander Ostaszewski
- Bryan Ostaszewski
- Christine Ostaszewski
- David Ostaszewski
- Dianna Ostaszewski
- Ellen Ostaszewski
- Heather Ostaszewski
- John Ostaszewski
- Ken Ostaszewski
- Kenneth Ostaszewski
- Mary Ostaszewski
- Max Ostaszewski
- Michelle Ostaszewski
- Mikela Ostaszewski
- Robert Ostaszewski
- Stanley Ostaszewski
- Steve Ostaszewski
- Sumiko Ostaszewski
- Wojcioch Ostaszewski
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