Indeed, there may be no ‘perfect’ political leadership in the world. 

However, it becomes a concern when two-thirds of nations score below the midpoint of the Corruption Perceptions Index. 

These rankings matter because they influence investment decisions, aid flows, political stability, and public confidence. 

The data used in this visualization comes from Transparency International’s 2024 Corruption Perceptions Index (CPI).

Lower CPI scores indicate higher perceived corruption, while higher scores reflect stronger transparency and accountability.

TL;DR

• South Sudan, Somalia, and Venezuela rank lowest on the 2024 CPI as the most corrupt countries in the world.
• Regionally, Sub‑Saharan Africa and the Middle East/North Africa have the highest concentration of corrupt countries, while Europe and East Asia have the least corrupt countries.
• Countries with higher corruption scores generally have lower GDPs.

UPDATE: The 2025 CPI has now been released, with top scorers including Denmark (89), Finland (88), and Singapore (84), while the most corrupt included South Sudan (9), Somalia (9), and Venezuela (10). South Sudan’s 2025 score rose from 8 to 9, while Denmark’s dropped from 90 to 89.

Global Corruption Rankings by Country (CPI Scores)

The table below lists countries ranked by their Corruption Perceptions Index (CPI) scores. 

South Sudan, Somalia, and Venezuela occupy the bottom of the 2024 Corruption Perceptions Index (CPI), with scores of 8, 9, and 10, respectively.

In South Sudan, years of civil war and political turmoil have eroded state institutions, creating fertile ground for mismanagement of public resources and elite capture of revenue streams. 

Despite its independence in 2011, the government has struggled to build effective accountability mechanisms.

A Major Concern in Sub-Saharan Africa

The 2024 Corruption Perceptions Index shows that corruption is heavily concentrated in specific regions, particularly:

1. Sub-Saharan Africa
2. Middle East/North Africa
3. Latin America
4. The Caribbean. 

Countries such as Syria, Yemen, Venezuela, and Nicaragua sit near the bottom of the rankings. 

They have shared challenges of conflict, weak institutions, poor governance, and limited accountability. 

By contrast, corruption is least prevalent in Europe and parts of East Asia, where countries like Denmark, Finland, Singapore, Japan, and South Korea consistently rank among the world’s cleanest. 

The regional divide shows that corruption is not evenly distributed globally, but closely tied to stability and institutional strength.

Corruption vs Income and Stability

In the index, Denmark tops the global ranking with a CPI score of 90, Finland follows with 88, and Singapore scores 84, indicating lower levels of perceived public-sector corruption. 

According to figures from Worldometer’s GDP statistics, these three nations also have substantial economies: 

Their GDPs in nominal terms are as follows : 

• Denmark: $459.61 billion
• Finland: $314.61 billion
• Singapore $574.18 billion

At the opposite end are the world’s most corrupt countries by CPI score, significantly smaller in their economies: 

• South Sudan: $4.98 billion
• Somalia: $12.94 billion
• Venezuela: $82.77 billion

In other words, countries with larger, more diversified economies and stronger institutions tend to have higher CPI scores. 

Conversely, smaller economies with limited institutional capacity frequently score lower in perceived integrity. 

ELI5

South Sudan, Somalia, and Venezuela ranked as the most corrupt countries in the world. 

When you look at regions, Sub-Saharan Africa and the Middle East and North Africa have the highest number of highly corrupt countries, while Europe and East Asia have the least. 

Sources : 

Worldometer | Transparency International’s 2024 Corruption Perceptions Index