Sioux Falls courthouse — DeCastro Law Office criminal defense and civil litigation attorney in South Dakota

South Dakota Defense Attorney · Est. 2000

When your future is on the line, choose the lawyer who actually shows up.

Manny De Castro has spent over 20 years defending South Dakotans in criminal and civil court. Direct, prepared, and relentless when it counts — in Sioux Falls, Madison, and across the state.

20+

Years in practice

13

Reported case opinions

2

South Dakota offices

100%

Direct attorney access

Why DeCastro

A practice built on preparation, not promises.

Hiring the right lawyer is the most important decision you'll make in your case. Here is what's different about working with this firm.

Trial-Tested

Two decades of South Dakota courtroom experience — from misdemeanors to federal felonies and Supreme Court appeals.

Personal Attention

You work directly with the attorney handling your case. No paralegal hand-offs. No 24-hour callbacks.

Strategic Defense

Every case is a different fight. We build the legal strategy around your facts, not a template.

Reported Wins

Multiple cases reported in South Dakota Supreme Court and federal court opinions. Results that matter.

Meet Your Attorney

Manuel J. De Castro, Jr.

A South Dakota lawyer like no other.

Admitted to the South Dakota Bar in 2000 and the U.S. District Court for the District of South Dakota in 2001, Manny DeCastro has spent his entire career inside the courtroom — not behind a desk delegating cases.

He's argued and won cases at every level of the South Dakota court system, including the Supreme Court. He prepares each file personally. He answers his own phone. And he treats every client — from a first-time misdemeanor to a federal felony — with the same focused attention.

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Sioux Falls courtroom — defense attorney Manny DeCastro, South Dakota trial lawyer

What clients say

Quiet wins. Loud impact.

"Manny took my case seriously from the first call. He prepared me, fought for me, and got the outcome I needed."
Former client · Criminal Defense — Sioux Falls
"Straightforward, no nonsense, and incredibly knowledgeable. He explained every option and let me make the decision."
Former client · DWI Defense — Madison
"I interviewed three attorneys. Manny was the only one who treated me like a person and gave me a real plan."
Former client · Civil Litigation

Talk through your case

When the stakes are this high, you deserve the right attorney.

Most consultations are free. Same-day appointments when we have them. Direct line to the attorney handling your case — not a switchboard.