雪尔塔语（Shelta、Gammen、Sheldru、或 the Cant「黑话」）是许多爱尔兰流浪者(Irish Travellers(Irish: an lucht siúil)、Pavee、Tinkers、Gypsies)所使用的语言。

雪尔塔语的字汇大部分来自爱尔兰语，并在借字的过程中使用了一种类似法语倒置音节的技巧；例如「女孩」的雪尔塔语是 lakeen，实际上是从爱尔兰语的 cailín 转来的（原来前后音节的声母 c 和 l 被倒置），又例如「门」rodas 是从爱尔兰语的 doras 转来的。在结构方面，雪尔塔语的语言结构与英语的结构有许多相似处，而它也包含了罗姆语（吉普赛语），虽然爱尔兰流浪者实际上并非罗姆人（吉普赛人）。即使这种语言包含了大量的非凯尔特语言的元素，雪尔塔语仍常常被误认为是凯尔特语族底下的盖尔亚支语言之一，但它实际上仅是一种根基于爱尔兰语和英语的黑话，并主要以英语为其语法的基础。

Shelta /ˈʃɛltə/ is a language spoken by Irish Travellers, particularly in Ireland, the USA and Great Britain. It is widely known as the Cant, to its native speakers in Ireland as De Gammon, and to the linguistic community as Shelta. It was often used as a cryptolect to exclude outsiders from comprehending conversations between Travellers, although this aspect is frequently over-emphasised. The exact number of native speakers is hard to determine due to sociolinguistic issues but Ethnologue puts the number of speakers at 30,000 in the Republic of Ireland, 500,000 in the UK (including Northern Ireland), and 50,000 in the US. The figure for at least the UK is dated to 1990; it is not clear if the other figures are from the same source.