Cognomen Yanlan (艳兰 
, Yanlan 
, 延兰 ) , across the world, is quite a rare surname. The family name Yanlan is habitual in China, where it is a rare surname, Malaysia, where it is a very rare surname, and Singapore. In absolute terms, it is the most numerous in China, Myanmar, and Malaysia. More prevalently, Yanlan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 延兰, 艳兰, 艳岚 | China |
| Yanlan | China, Malaysia, Hong Kong, Taiwan, Myanmar |
Янлан, Яньлань, 严兰, 严岚, 严蓝, 堰兰, 堰岚, 堰澜, 堰蓝, 妍兰, 妍岚, 妍斓, 妍蓝, 嫣兰, 嫣岚, 嫣蓝, 嬿岚, 嬿嵐, 宴兰, 岩兰, 岩岚, 延岚, 延揽, 延澜, 延蓝, 彥兰, 彦兰, 彦岚, 彦斓, 彦澜, 彦蓝, 彦览, 彦谰, 晏兰, 晏岚, 殷兰, 殷岚, 殷斓, 渷懢, 滟兰, 滟岚, 演兰, 炎兰, 炎岚, 炎蓝, 烟兰, 烟岚, 烟蓝, 焉兰, 焰兰, 焰蓝, 焰阑, 焱兰, 焱岚, 焱烂, 焱蓝, 煙蘭, 燕兰, 燕岚, 燕斓, 燕栏, 燕澜, 燕烂, 燕蓝, 燕蘭, 燕镧, 琰兰, 琰岚, 琰斓, 盐兰, 眼蓝, 研兰, 研岚, 砚兰, 砚岚, 砚澜, 砚烂, 砚蓝, 艳斓, 艳澜, 艳蓝, 艳阑, 艷蘭, 蜒兰, 衍兰, 衍澜, 言兰, 豔蘭, 鄢兰, 闫岚, 闫谰, 雁兰, 雁岚, 雁斓, 雁蓝, 雁藍, 颜兰, 颜岚, 颜蓝, 验兰, and 鴳斓