Do I need a chin implant? Would it benefit my profile and make my jawline more defined?

From your photos and narrative you should do well with a chin implant augmentation and perhaps liposuction. To be sure see a board certified plastic surgeon.

By your pictures and stated desires your jawline would best be improved through a combination of chin and jaw angle implants. Both will work together to create a kore square facial/jawline appearance. A chin implant can not do that alone. These jawline implants would be further enhanced by liposuction of the neck below the jawline.

  The photographs demonstrate  a weak and recessive chin profile, for which a chin implant can improve. Chin implants are manufactured in a variety of sizes and shapes, are composed of Silastic, and are inserted under local anesthesia through a submental approach. For many examples and more information, please see the link and the video below

Based on the pictures posted and the desired "Mode" look. May be first is to liposuction the jaw line and the submental area. Need in person evaluation and discussion for cheek fat pad removal. After that reevaluate and another decision can be made.Computer imaging may help you see the changes of each surgery and clarify your needs

A chin implant is a good way to improve the contour of the chin area. From the looks of your photos, it appears that you may be a reasonable candidate for the surgery. I typically insert a solid silicone implant through a small incision inside the mouth. It lies directly on the bone of the chin and causes the chin to look more defined. Downtime is minimal, but you will have an altered full denture smile for a couple weeks.Make sure to choose a board-certified plastic surgeon.Good luck!

It does appear from some of the photos that you would benefit from a chin implant to augment that region of your face. It also appears that you have submental fat in this area which can be treated both surgically and nonsurgically. I think to maximize your results and expectations this should also be addressed. The nonsurgical treatment is Kybella, an injectable agent that destroys the fat cells over the course of several treatments. The surgical option is liposuction which does have some recovery associated with it but can be done simultaneously with the chin implant. Either way I would recommend a consultation to better understand your options and get a thorough evaluation. 

 I believe either a chin implant or advancement genioplasty with some neck liposuction will improve you profile and neck form.  It will take the emphasis off your nose and balance the face.  Find a board certified surgeon for the best result.  Good luck.  Donald R. Nunn MD, DDS  Atlanta Plastic Surgeon

There are several procedures you can do to give you a more angular appearance.  Men are very handsome when they have this angle.  You would benefit from a chin implant as your chin is weak on profile.  Having Radiesse injections to the jawline will provide angularity to the jaw.  On front view, your face is heavier in the bottom.  Liposculpting can reduce that heaviness.  Cheek implants would also provide more structure and angularity to your face. 

Your chin is disproportionately small for your face. You would benefit significantly with a chin implant placed through the mouth. I can be done under local anesthesia as an out patient.