South Korea Top Court Upholds Yoon's Seven-Year Prison Sentence
By Global Leaders Insights Team | Jul 09, 2026
South Korea's Supreme Court has upheld a seven-year prison sentence for former President Yoon Suk Yeol, bringing to a close the first Supreme Court case linked to his controversial declaration of martial law in December 2024. The ruling confirms an earlier decision by the Seoul High Court, which found Yoon guilty of obstructing justice and other offences connected to the political crisis.
The decision is another major legal setback for the former president, who is already serving time and facing several other criminal trials related to the failed martial law declaration. His lawyers have criticised the ruling and said they will seek a constitutional review, arguing that the court did not fully consider his appeal.
Supreme Court Backs Lower Court Verdict
The Supreme Court rejected Yoon's appeal and upheld the seven-year sentence handed down by the Seoul High Court in April. The appeals court had increased his prison term from five years after finding him guilty of additional charges beyond those established in the initial trial.
The court found that Yoon Suk Yeol had used presidential security personnel to block investigators from carrying out an arrest warrant after his impeachment. It also ruled that he bypassed the legal process required before declaring martial law by failing to properly consult his Cabinet. In addition, Yoon was found guilty of altering official documents after the martial law order was lifted and sharing misleading information about the government's actions.
Prosecutors had asked for a 10-year prison sentence, arguing that Yoon abused presidential powers and damaged public trust in the country's democratic institutions. However, the Supreme Court ruled that the lower court had correctly applied the law and found no reason to overturn its decision.
Legal Battles Are Far From Over
Although this case has now reached its legal conclusion, Yoon still faces several other criminal trials linked to the 2024 martial law declaration. Earlier this year, he was sentenced to life imprisonment after being convicted of leading an insurrection related to the same incident. In another separate case, he received a 30-year prison sentence over allegations that military drone operations were used to create a justification for imposing martial law. Both verdicts are currently under appeal.
Yoon has remained in custody since July 2025 and continues to face multiple ongoing trials. The outcomes of these cases are expected to play an important role in shaping South Korean politics and the country's legal landscape following one of its most serious constitutional crises in recent years.
Following Thursday's ruling, Yoon's legal team expressed disappointment with the decision, saying the Supreme Court had not given sufficient consideration to the appeal. They confirmed plans to file a constitutional complaint in an effort to challenge the ruling.
Also Read: Kia Appoints Song Min-su as Co-CEO to Boost Manufacturing Growth
The latest judgment highlights South Korea's continued efforts to uphold the rule of law and hold former leaders accountable through the legal system. As the remaining cases move through the courts, they are likely to remain at the centre of the country's political debate and public attention.
