蕾伊·（英语：Rey）是一名科幻电影系列《星球大战》中的虚构人物，由英国女演员黛西·蕾德莉饰演。首次以主要角色的身份出现于《STAR WARS：原力觉醒》，蕾伊是银河帝国皇帝希夫·帕尔帕庭的孙女，童年时期被父母(父亲传言是帕尔帕庭失败的克隆人)遗留在贾库星上，以避开帕尔帕庭的追捕，当她捡到抵抗势力的王牌飞行员波·达默龙的机器人BB-8并遇到一心想脱离第一秩序的帝国风暴兵芬恩时，导致她的孤独生活被中断，并卷入第一秩序和抵抗势力的战争之中。
Screenwriter 麦可·阿恩特 said that he found Lucasfilm President Kathleen Kennedy's offer to write the sequel trilogy daunting in mid-2012, but he became interested when it was explained to him that the tale was about the origin story of a female Jedi and he met with 乔治·卢卡斯. The character was a young woman known as Kira in the early stages of production, and 阿恩特 described her as a "loner, hothead, gear-head, badass". 阿恩特 said that he struggled with introducing the young woman as the main character in his story while keeping her from being overshadowed after her early meeting with the Luke Skywalker character. Ridley recalled that director and writer J·J·艾布拉姆斯 originally intended to name the character "Keera", however during filming in 阿布扎比, 艾布拉姆斯 revealed to Ridley that he was thinking of going with "Rey".
On creating a female lead for the new trilogy, 艾布拉姆斯 stated that from his initial discussions with writer 劳伦斯·卡斯丹（英语：Lawrence Kasdan）, he was excited at the concept of having a woman at the center of the story. He said that "We always wanted to write Rey as the central character" and that other female representation in the story was also important. 肯尼迪 stated that, "Rey is the new generation's Luke Skywalker." Rey's background as a scavenger was part of the developers attempting to portray her as "the ultimate outsider and the ultimate disenfranchised person", due to their belief that a person of that nature would likely experience a prolonged journey compared to other types of people.
Daisy Ridley was largely unknown before being cast for the role of Rey. Ridley said that she auditioned many times for the role over the course of seven months and had to keep her casting a secret for three months. She was announced as part of the cast at the end of April 2014. She only had experience with small parts in TV shows. Her inexperience and lack of exposure were a crucial part of what convinced 艾布拉姆斯 to give Ridley the role, as the previous installments had featured relatively unknown talent that would not experience heightened degrees of scrutiny. 艾布拉姆斯 stated that Ridley "was so funny and had a great spark", as well as having her act out an emotional scene, proclaiming that "she nailed it on the first take." 艾布拉姆斯 would go on to praise Ridley, stating "She was born with this gift to be in a moment and make it her own. She simultaneously works from the inside out and the outside in." 肯尼迪 proclaimed "Daisy had a physicality and a self-confidence that was so important to the character we were looking for. She epitomizes that optimism where anything is possible." Director Dusan Lazarevic, who was present at the casting of Ridley for a role in British drama series , in addition to praising her acting range, stated "She showed a combination of vulnerability and strength which gave her a complexity, and there was an intelligence in her eyes that was an indicator she could play quite a complicated part." Cailey Fleming was additionally cast to portray a young Rey.
Although Ridley expressed that she was "riddled with doubts and insecurities", she stated that Rey's hopefulness is what she related to most in Rey, going on to say it "was something driving me through the auditions—even though it felt so insanely out of anything that I could've imagined." Ridley recalled her shooting experience as starting off bumpy, with 艾布拉姆斯 telling her that her first few takes were "wooden". However, Ridley and 艾布拉姆斯 had an "incredibly collaborative" process with creating Rey; Ridley recalled that the character "changed from when we first began, she became softer. And I think that's probably me, because Americans tend not to understand me, so it helped, slowing down the speech and everything just made it softer than I am." On her character, Ridley has stated that Rey will have "some impact in a girl power-y way", adding that the character "doesn't have to be one thing to embody a woman in a film. It just so happens she's a woman but she transcends gender. She's going to speak to men and women." In an interview with , Ridley would continue describing her character, "She's so strong. She's cool and smart and she can look after herself," adding "Young girls can look at her and know that they can wear trousers if they want to. That they don't have to show off their bodies."
作曲家约翰·威廉斯说道他立刻喜爱上了电影中的蕾德莉，并且他将创作（英语：Rey's Theme）视为很有趣的挑战。他说道她的主题曲并不表示一部爱情主题曲，而是展示了一位顽强的女性冒险者。她是一位战士，为原力所充斥，因此这音乐必须是雄壮但又充满深思的。
与标志性的在和弦上紧密相关，在《原力觉醒》的片尾曲中，威廉斯将两曲对位演奏。
威廉斯表示的“音乐语言”并非是像一部英雄主题曲一样；而像是一部冒险主题曲，也许将不仅仅拘泥于带来最宏大胜利的曲终;同时还需要展现出他对角色所怀有的同情心。
蕾伊是一名在贾库星上长大的拾荒者，平日是在沙漠中四处寻找可用的机械零件与材料换取食物等日常用品维生。
某日，蕾伊在结束了一次拾荒的行动后遇见了正被其他拾荒者想拿去卖掉的BB-8，她将对方赶走后收留了BB-8，并将它带到了市集上。在市集的管理者欲收购BB-8不得后，便意图用抢夺的手段夺走BB-8，本来想置之不管的蕾伊最后还是将抢夺者赶走，并在之后从BB-8的提醒下发现了穿着波·达默龙的飞行员夹克的芬恩。两人在起了争执后，芬恩为了不被当成是小偷便谎称自己也是抵抗势力的成员；随后因BB-8被侦查兵发现，市集遭到空袭，蕾伊驾驶荒废多年的千年隼号载着三者逃离贾库星。
三人在逃离第一秩序的追击后遇见了千年隼号的原始主人韩·索罗和丘巴卡，但韩的债主群找上门而使双方展开追逐。五人顺利离开后，韩将他们带到他的朋友玛兹·卡娜塔那里。芬恩不想再扯入纷争而决定离开此处前往边境星域，蕾伊则在听从内心的呼唤下于地下室中发现了曾由阿纳金·天行者与卢克所使用的光剑，并看到了过去所发生的景象。但难以接受玛兹的说法的蕾伊最后逃进了森林并打算不再介入此事。不料，凯洛·伦的部队袭来，为了不让BB-8落入对方手中，蕾伊在森林中和风暴兵相抗，但最后不敌凯洛·伦的原力而被捕。
于弑星者基地中，凯洛·伦意图用原力套出蕾伊已知的卢克·天行者所在地的地图，但在蕾伊本身初步觉醒的原力抵抗下失败；之后蕾伊趁凯洛·伦离开时以原力催眠了风暴兵逃走，途中遇见了来相救自己和意图摧毁基地的芬恩与韩等人。
在凯洛·伦拒绝回归光明而选择黑暗面杀死了自己的父亲韩后，芬恩和蕾伊对上了重伤的他，芬恩拿起卢克的光剑与凯洛·伦对峙却败下，蕾伊则爆发原力用光剑重创了凯洛·伦。在搭乘丘巴卡开的千年隼号离开，回到抵抗势力基地后，蕾伊透过BB-8和R2-D2结合的地图知道了卢克的所在位置，并搭乘千年隼号来到了卢克的面前，将光剑递出要还给卢克。
起初卢克对蕾伊态度冷淡，不愿意训练她，直到R2-D2播出莱娅公主当年向欧比旺求救的片段，卢克才勉强愿意对蕾伊进行短期的训练，令蕾伊成为他临终前最后一位绝地学徒。在训练过程中，蕾伊和凯洛忍陷入了一股力量之中，使得她能够用心灵感应与忍进行交流，但在与忍进行交流过程中让她开始质疑天行者对忍所做的一切。为了能够使忍重返光明面，她最终离开了卢克，并前往第一秩序舰队寻找忍。
当蕾伊到达第一秩序舰队时，她被凯洛忍带到斯诺克的房间。斯诺克声称，他建立了蕾伊和忍之间的连接，使他可以透过蕾伊身处的位置找到卢克，并派人到阿奇托星（英语：Ahch-To）杀害他。斯诺克在得知卢克的位置后，便下令凯洛忍斩杀蕾伊，但此时凯洛忍背叛了他的主人并杀害他。斯诺克死后，凯洛忍游说蕾伊和他重建整个银河系的秩序。但蕾伊拒绝他的请求，并和丘巴卡逃回千年隼号，返回义军基地。
最后，卢克使用战斗冥想演化出分身与第一秩序对峙，令蕾伊可以有足够时间协助义军逃脱。在卢克临死前，认定了蕾伊为其继承人。
获得卢克认可后，蕾伊在义军基地藏身的星球接受莱娅的指导继续著绝地武士的修练。此时，波与芬恩带回间谍所提供的皇帝帕尔帕庭尚在人世的讯息，蕾伊决定中断训练，动身寻找能够指出帕尔帕庭藏身的艾克西格星（Exegol)所在地“未知领域”的寻路仪，以帮助义军消灭帕尔帕庭与第一秩序。蕾伊原打算独自前往，在波、芬恩、丘巴卡、C3PO、BB-8等人坚持下陪同一起上路。
众人驾驶千年隼号，一路行经帕萨纳星（Passanna）、基奇米星（Kijimi）和凯夫伯星（Kef Bir）追查通往“未知领域”的线索，却在这之中逐渐揭开了蕾伊的身世。凯洛忍向蕾伊告知她的真实身份是皇帝的孙女，与身为维达之外孙的自己合起来呈现了原力的二元性。凯洛忍早已察觉帕尔帕庭纯粹只是利用自己来激发蕾伊的真正本性，但凯洛忍则希望能与蕾伊联手消灭皇帝来一起统治银河。
蕾伊拒绝凯洛忍后与其展开光剑激战，途中莱娅用尽原力向儿子劝导回头，最后死亡。原本占上风的凯洛忍因母亲之死大受动摇，被蕾伊趁隙刺中一剑。但蕾伊对凯洛忍仍旧怀抱光明的希望，用原力治愈了他，却因在战斗中沉浸于愤怒的情绪，而即将进入原力黑暗面成为西斯的自己感到恐惧，打算放弃一切，前往阿奇托星隐居。
凯洛忍受到莱娅与蕾伊的原力影响，更见到父亲韩索罗的幻影得到其原谅，因此回归光明面恢复为班索罗。阿奇托星上，卢克以绝地英灵的姿态出现向蕾伊开导：能定义自身的不是血统而是做出的选择，并将莱娅在绝地学徒时期使用的光剑交给蕾伊。蕾伊振作后驾驶着卢克当年驾驶过的X翼战机，并借着凯洛忍放在自己的钛战机中的寻路仪，动身前往艾克西格星面对帕尔帕庭，并沿路划出安全的航线传送给义军，以利义军发动大反攻。
蕾伊与班先后到达艾克西格星，班因叛变遭到忍武士团围攻，在即将落败之际获得蕾伊以原力传送光剑支援，打败了忍武士团，前往支援蕾伊；在蕾伊拒绝帕尔帕庭希望她成为西斯女皇的提议后，帕尔帕庭从蕾伊与班两人身上吸取二元性的原力而使自己恢复到最强大的程度，随即以原力闪电瘫痪义军同盟船舰。遭帕尔帕庭吸取原力而虚弱的蕾伊，从上千世代的绝地英灵呼唤声中得到鼓励，用天行者家族的两把光剑将帕尔帕庭的原力闪电反弹回去，终究消灭了帕尔帕庭。蕾伊气力放尽濒亡，已受重伤的班把自己的生命用原力以吻的方式传送给蕾伊，代替她面对了死亡的命运。
义军同盟胜利，全银河各地的星球跟着纷纷起义推翻了第一秩序的统治，成功阻止银河帝国再次堀起。最后，蕾伊来到塔图因星的卢克故居旁，将天行者家族的两把光剑埋藏于此，并在卢克与莱娅的绝地英灵的肯定下，继承其姓氏为蕾伊·天行者，手中也展示了自己制作的金黄色光剑，象征将以绝地武士身份延续及守护绝地的信仰。
蕾伊的角色还出现于电子游戏《Disney Infinity 3.0（英语：Disney Infinity 3.0）》及《乐高STAR WARS：原力觉醒》之中，两者皆由蕾德莉负责配音。
蕾德莉因饰演该角的表现获提名第42届土星奖（英语：42nd Saturn Awards）的最佳女主角（英语：Saturn Award for Best Actress）奖。
