热罗姆·凯维埃尔（Jérôme Kerviel，1977年1月11日－，生于法国蓬拉贝），前法国兴业银行金融与投资部门交易员，涉嫌在2007年至2008年初未经许可下多次交易欧洲股票指数期货，令该行损失49亿欧元，是历来最严重的银行诈欺案。他是该行中级职员，任职未满八年。是次事件他被媒体称为「魔鬼交易员」。

不过诈欺事件曝光后翌日，路透社称：「巴黎检察署明确表示，凯维埃尔的控罪不一定自动成立。该名交易员是受薪进行买卖，即使他造成极大损失，但这单一原因不足以令他有罪。」

凯维埃尔所持仓的清仓所致整体损失，如果责任全归到凯维埃尔本人，这将是迄今为止金融机构交易员判断错误导致的最大损失。

Jérôme Kerviel (French pronunciation: ​[ʒeʁom kɛʁvjɛl]; born 11 January 1977) is a French trader who was convicted in the 2008 Société Générale trading loss for breach of trust, forgery and unauthorized use of the bank's computers, resulting in losses valued at €4.9 billion. Société Générale characterizes Kerviel as a rogue trader and claims Kerviel worked these trades alone and without its authorization. These assertions have been met with skepticism by some of Kerviel's former colleagues and acquaintances, as well as by some members of the news media. Kerviel had told investigators that his trading behavior was widespread at the company and that making a profit made the hierarchy turn a blind eye. Kerviel published a book in May 2010, L'engrenage: Mémoires d’un Trader (The gears: Memoirs of a Trader), in which he alleges that his superiors knew of his trading activities, and that the practice was very common.