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Online Forms

Our patient forms are available online and can be completed in the privacy of your own home or office.


We strive to provide complete care for our patients. Learn more about all the services we provide.



Despite what you may have heard, dental care doesn’t need to be uncomfortable or painful. The office of Henry A. Knowles, Jr., DMD, PA is dedicated to providing our clients with painless, gentle dentistry that can make even the most resistant individuals enjoy coming to the dentist. We specialize in long-lasting restorations and customized treatment plans for the whole family. We pride ourselves on our excellent customer service, both in our front office and at the dentist’s chair.

Proper dental hygiene and regular preventive care measures are essential not only for the health of your mouth but for your overall health as well. Don’t put off going to the dentist—make an appointment with Dr. Knowles today.

Dr. Henry Knowles Jr. is a proud member of the American Dental Association and the Florida Dental Association. We are insured and locally owned and operated. Our office accepts most insurance plans, and emergency visits are welcome. Please call ahead to make arrangements for your visit. We are currently accepting new patients and lunchtime appointments are available!

Meet Our Doctor

  • Henry A Knowles Jr DMD
    Henry A Knowles Jr

    Dr. Henry A. Knowles, Jr. was born in Marianna, FL and was raised in Chipley, FL. Dr. Knowles attended Chipola College and graduated from Troy University with a bachelors degree in Chemistry. Dr. Knowles received his dental degree from the University of Florida.

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What Our Clients Say About Us

  • “My name is Bobby Hughes and I live in Marianna, FL. I was one of Dr. Knowles’ first patients after he opened his practice in Marianna in 2001. He and his staff are very friendly and they make you feel at ease in his office. Dr. Knowles is always concerned about your dental problems and his work is exceptional.” - Bobby Hughes – Marianna, FL.

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  • “I cannot say enough good things about this practice. I’ve been a patient of Dr. Knowles since 2004 as have both of my children and husband. Not only is Dr. Knowles a great dentist, he is a perfectionist and takes a lot of pride in his work. He is extremely gentle and tries to make the experience as painless as possible. The staff is also friendly and professional. I recommend this office to all of my friends.” - Amy Saunders – Marianna, FL

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  • "Dr. Henry Knowles is the best dentist. He is very particular with his work. You do not get out of the chair until the work is perfect. My husband and I have been using Dr. Knowles for about 13 years. The staff treats you very good." - Penny and Charles Sanders – Greenwood, FL

  • "Dr. Henry Knowles' office is run with calmness, efficiency, quietness and interest. It is led by a man with gentle hands and a gentle spirit." - Sandra Peacock – Marianna, FL

Our Location

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