| Rank | Country | Household income or consumption by percentage share |
| Jan Mayen | void |
3 | Japan | lowest 10%: 4.8% highest 10%: 21.7% (1993) |
| Jersey | lowest 10%: NA% highest 10%: NA% |
50 | Jordan | lowest 10%: 2.7% highest 10%: 30.6% (2003) |
27 | Kazakhstan | lowest 10%: 3.3% highest 10%: 26.5% (2004 est.) |
85 | Kenya | lowest 10%: 2% highest 10%: 37.2% (2000) |
| Kiribati | lowest 10%: NA% highest 10%: NA% |
| Korea, North | lowest 10%: NA% highest 10%: NA% |
51 | Korea, South | lowest 10%: 2.7% highest 10%: 24.2% (2007) |
| Kosovo | void |
| Kuwait | lowest 10%: NA% highest 10%: NA% |
11 | Kyrgyzstan | lowest 10%: 3.8% highest 10%: 24.3% (2003) |
24 | Laos | lowest 10%: 3.4% highest 10%: 28.5% (2002) |
63 | Latvia | lowest 10%: 2.5% highest 10%: 29.1% (2003) |
| Lebanon | lowest 10%: NA% highest 10%: NA% |
115 | Lesotho | lowest 10%: 0.9% highest 10%: 43.4% (2002 est.) |
| Liberia | lowest 10%: NA% highest 10%: NA% |
| Libya | lowest 10%: NA% highest 10%: NA% |
| Liechtenstein | lowest 10%: NA% highest 10%: NA% |
52 | Lithuania | lowest 10%: 2.7% highest 10%: 27.7% (2003) |
19 | Luxembourg | lowest 10%: 3.5% highest 10%: 23.8% (2000) |
| Macau | lowest 10%: NA% highest 10%: NA% |
67 | Macedonia | lowest 10%: 2.4% highest 10%: 29.6% (2003) |