|Died||27 August/13 September 1281/2|
|Noble family||Silesian Piasts of Opole|
|Spouse(s)||Euphemia of Greater Poland|
|Father||Casimir I of Opole|
|Mother||Viola, Duchess of Opole|
Vladislaus I of Opole (Polish: W?adys?aw opolski) (c. 1225 - 27 August/13 September 1281/2) was a Duke of Kalisz during 1234-1244, Duke of Wielu? from 1234 to 1249 and Duke of Opole–Racibórz from 1246 until his death.
At the time of his father's death in 1230, both W?adys?aw and his older brother Mieszko II the Fat were still minors; because of this, they were placed under the care of their mother Viola and Henry I the Bearded, Duke of Wroc?aw. In 1234 Henry I the Bearded, wishing to take full control over Opole, moved the young dukes to Kalisz, but without denying their hereditary rights. Four years later, Mieszko II the Fat attained his majority, and Henry II the Pious (son and successor of Henry I the Bearded), was forced to give him government over Opole-Racibórz. Despite this, W?adys?aw and his mother Viola remained in Kalisz, where she acted as regent on his behalf until 1241, when W?adys?aw was declared an adult and able to rule by himself.
The death of Henry II the Pious in the Battle of Legnica (1241) put in jeopardy W?adys?aw's rule over Kalisz and Wielu?; the definite loss of this lands appeared to be only a matter of time, thanks to the pretensions of Przemys? I of Greater Poland, who wanted to recover these lands. Eventually, W?adys?aw lost Kalisz in 1244 and Wielu? five years later in 1249.
In 1246 Mieszko II the Fat died without issue, leaving in his will all his lands to his brother W?adys?aw. Soon after, the new duke failed to maintain in his hands the fortress of Lelów, acquired by Mieszko II three years before. Despite this bad beginning of his rule, W?adys?aw made skillful maneuverings with the other Piast Duchies, who allowed to him to maintain his frontiers. By the first half of the 13th century, W?adys?aw's relations with the Dukes of Greater Poland were normalized. W?adys?aw finally gave up his claims over Kalisz and Wielu?, and as a part of his new alliance with Greater Poland, he married Euphemia, sister of Przemys? I.
Shortly after his marriage W?adys?aw, like other Piast Dukes, entered the war between Hungary and Bohemia after the extinction of the House of Babenberg. At first, the Duke of Opole-Racibórz supported the Hungarians, supporting Boles?aw V the Chaste in his attacks over Opawa and G?ubczyce. However, in 1255, and for unknown reasons, W?adys?aw changed sides and supported King Ottokar II of Bohemia, and in 1260 the duke personally took part in the Battle of Kressenbrunn against the Hungarians. This change of alliance soon brought real benefits to W?adys?aw, in the form of regulations in the frontiers between his duchy and the Bohemian Kingdom. In 1262, at the Congress of Danków, W?adys?aw attempted to make a triple alliance with the Bohemian King, Boles?aw V the Chaste and Boles?aw the Pious, one of the rulers of Greater Poland, but without significant results.
The opportunity to obtain the throne of Kraków appeared only in 1273. W?adys?aw, despite his alliance with Boles?aw V the Chaste entered Lesser Poland with some of his forces. The decisive battle took place on 4 June 1273 in Bogucin Ma?y, where the Opole-Racibórz army was defeated. In October of that year, Boles?aw V the Chaste made a retaliatory expedition against Opole-Racibórz; however, the forces were limited only to destroy specific areas of the duchy. In 1274 W?adys?aw and Boles?aw V the Chaste decided to conclude a peace, under which the Duke of Opole-Racibórz probably gave up his claims over the throne of Kraków, in return for which the borders of both duchies were finally eliminated.
On 25 August 1278 the Battle on the Marchfeld took place, which proved to be decisive in terms of King Ottokar II's fate. Despite the successful cooperation with the Bohemian King, this time W?adys?aw didn't send supporting troops to the King. What is more, shortly after receiving news of the Ottokar II's defeat and death, the Duke of Opole-Racibórz attacked Opawa, probably wishing to obtain it. However, the rapid normalization of the situation in Prague and the efficient rule of the regency on behalf of the minor King Wenceslaus II clashed with his intentions. To normalize his now tense relations with the Bohemian Kingdom, W?adys?aw was present in the Congress of Vienna in 1280, where he, alongside to Henry IV Probus, paid homage to King Rudolph I of Germany. This meeting would be an opportunity to W?adys?aw to conclude a new alliance, this time with Henry IV Probus, Duke of Wroc?aw. The agreement was sealed with the marriage of Henry IV to W?adys?aw's daughter, perhaps named Constance. W?adys?aw also promised to support his new son-in-law in his efforts to obtain the royal crown, but under the condition that his daughter would be crowned as queen.
In internal politics, W?adys?aw sought to continue the work of his predecessors, while increasing the importance of the Church in his lands. He was a founder of many monasteries, like the Dominicans in Racibórz, the Cistercians in Rudy, the Franciscans in Wodzis?aw and G?ogówek and the Benedictine in Orlová). Another important sign of his reign was the institution of Magdeburg Law in almost all the cities of his duchy (such as Bytom, Gliwice, Lubliniec, O?wi?cim, Wodzis?aw, and ?ory).
W?adys?aw died between 27 August and 13 September 1282 (1281 according to some sources) and was buried in the Dominican monastery of Racibórz.