My eyebrows are uneven and asymmetrical. I was wondering if an eyebrow transplant could completely fix this? (photos)

Without standardized photos it is hard to evaluate your concern, I strongly advise you to seek a in-person consultation a transplant specialist. To determine if an eyebrow/hair will give you the result you're looking for, and if a surgery is worth the results and cost. Non-surgical approaches to help with asymmetry is Botox to even the eyebrows and filler as well. 
Best,
Dr. Anil Shah, MD FACS 

If you are considering a cosmetic surgery it would be in your interest to see a doctor for an examination to make sure you would be a candidate. Surgery (no matter how perfect) will not give you exact symmetry. It may look better but it will not be the exact mirror image. 

An eyebrow restoration when done correctly can have great success reshaping and changing the appearance and look of your brows. 

Eyebrow transplantation can help you achieve, or at least get close, to your goal. Make sure your hair loss is not due to alopecia areata, diagnosed by a dermatologist of your choice. Alopecia areata could be made worse by a hair transplant procedure. Also make sure the hair loss is not caused by medical conditions, like thyroid problems, that could improve after medical treatment by your internal medicine or family doctor. Eyebrow transplantation might require more than one procedure to achieve your goal. Also remember it requires frequent trimming and shaping by yourself after the transplants grow. The transplants start to grow around 3 months after the procedure, and the full result takes about 8-12 months. 

From the supplied pics it looks as though you have had loss in your left eyebrow that may be a small patch of alopecia areata. See your dermatologist first to ensure that isn't the case because if it is, this hair can often be regrown without the need for transplantation. 

Eyebrow transplants are one of the most challenging areas to create natural results in, and the inside of the eyebrows present even greater challenges due to the direction of growth.  Do your homework, and most importantly be prepared with realistic expectations and seek out a specialist in this procedure.

The short answer is yes. All of these things can and have been achieved. It is important that you seek out the advice of a talented hair restoration specialist that has an artistic eye so that this can be recreated in the image that you are looking for. 

Artistry is paramount in achieving the result you want. The photographs supplied give only a peek into the eyebrow issue you have. Best to have an in person consultation to see if your needs can be met.