Experienced Counsel Is Your Best Defense

Even if it feels like the world is crashing down on you, you deserve an attorney who does not make any judgments about your situation and is ready to fight for you in court.

An accomplished criminal defense attorney aiding people of Sioux Falls and all of South Dakota.

The Advice And Options You Deserve

As a criminal defense attorney, my number one job is to provide my clients with the pros and cons of their case in a judgement-free way so they can make the soundest decisions. At my law firm, D. Sonny Walter, Attorney At Law, I have successfully defended thousands of good people since 1989, zealously representing my clients when facing even the most severe criminal punishments.

Our Attorneys

D. Sonny Walter

Resourceful And Respected

I have represented clients in almost every type of criminal defense case there is. Whether my clients are facing charges of driving under the influence, charged with possession or distribution of a substance, assault, theft or even homicide, I am not afraid to keep your best interests at the forefront of my mind. I am willing to take your case to trial and fight in your corner if I truly believe it is the best course of action over taking a guilty plea deal.

I am privileged to not only be respected by my clients when it comes to defending them, but by my peers as well. Alongside making sure that my clients are heard and fought for, I have the honor of previously and presently holding peer-elected titles, such as the East River Coordinator for South Dakota Association of Criminal Defense Lawyers for several terms.

Discuss Your Options With An Experienced Criminal Defense Attorney

Minnehaha County Courthouse



“I highly recommend Sonny as a criminal defense attorney. He is responsive, knowledgeable, and passionate about his work, and I trusted him completely throughout my legal proceedings.”

“I was facing serious charges, but Sonny’s expertise and guidance helped alleviate my anxiety and gave me hope. He fought tirelessly on my behalf and achieved a positive outcome in my case.”

You can trust over 30 years of experience on your side