Based on a comparison of 98 countries in 2017, Russia ranked the highest in natural gas reserves as a share of worldwide reserves with 25.6% followed by Iran and Qatar. On the other end of the scale was Albania with < 0.001%, Dem. Republic of the Congo with < 0.001% and Greece with < 0.001%.
Data for more countries are available at Natural Gas Reserves (As % of Worldwide Reserves) indicator page.
| Natural Gas Reserves (As % of Worldwide Reserves) | Unit | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 |
| Algeria | % | 2.37% | 2.34% | 2.32% | 2.28% | 2.38% | ||||||||||||||||
| China | % | 1.60% | 1.57% | 2.06% | 2.23% | 2.45% | ||||||||||||||||
| Indonesia | % | 1.58% | 2.07% | 1.58% | 1.50% | 1.55% | ||||||||||||||||
| Iran | % | 15.6% | 17.2% | 17.3% | 17.1% | 18.0% | ||||||||||||||||
| Iraq | % | 1.67% | 1.64% | 1.63% | 1.60% | 1.67% | ||||||||||||||||
| Kazakhstan | % | 1.27% | 1.25% | 1.24% | 1.22% | 1.27% | ||||||||||||||||
| Mozambique | % | 0.067% | 0.066% | 0.066% | 1.43% | 1.50% | ||||||||||||||||
| Nigeria | % | 2.79% | 2.65% | 2.66% | 2.59% | 2.70% | ||||||||||||||||
| Qatar | % | 13.4% | 13.1% | 13.0% | 12.7% | 13.0% | ||||||||||||||||
| Russia | % | 25.0% | 24.7% | 24.7% | 24.2% | 25.3% | ||||||||||||||||
| Saudi Arabia | % | 4.11% | 4.16% | 4.21% | 4.17% | 4.41% | ||||||||||||||||
| Turkmenistan | % | 3.95% | 3.89% | 3.87% | 3.80% | 3.97% | ||||||||||||||||
| USA | % | 4.54% | 4.91% | 4.50% | 4.85% | ... | ... | |||||||||||||||
| United Arab Emirates | % | 3.40% | 3.16% | 3.14% | 3.08% | 3.22% | ||||||||||||||||
| Venezuela | % | 2.67% | 2.87% | 2.85% | 2.82% | 2.95% |
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