Husband bought land in sister's name. Can I File legal fraud charges against them?

Are you ina divorce action? If so and he is attempting to secrete assets through other individuala or corporations; you can have your attorney 1) do a set of interrogatories 2) have the court order a forensic financial examination . If he lies under oath at the interrogatories , he could be subject to perjury and contempt of court.
If he is going to play hard ball, you will have to find an attorney that will play hard right back.
He can't hide funds in this day and age; he is also not the first spouse to try that old scam. They follow the money; if he is "missing" the amount of money the land was purchased for and his sister cannot acccount for the moeny she used to purchase the land; the court will put 2 and 2 together; laundering money isn't as easy as it used to be.

Land bought in sister and brother's names in 04. I found checks paid to his sister for land taxes.
Not till May of 05 did husband ask me to sign a waiver of ownership to land. He lead me to believe
he was just purchasing it then. Then I found a cashiers ck made out to title company for a large
sum of money. I also found more checks to pinal county treasure for land tax. I am now in court
facing divorce. I did not sign that waiver. Why would he give a check to tittle company and land
still shows ownership to sister AND brother?

Can I or no t bring fraud charges on her or both of them. I don't have a lawyer!

Private parties " cannot bring "charges" the government does that. I am not clear how this is fruad at the time; concealing assets from the court is a crime, but you are not at that stage yet
I answered your other questions.
you MUST get a lawyer or you are going to end up in poverty

What about already divorce, found that exhusband has HID and may have money laundered our assets, he filed jointly income tax and efiled income tax quarterly of the last 7 years of marriage to him. what can I do to go after my exhusband about this?

Here is a generic answer about parties concealing assets. You MUST have a lawyer that will motion for discovery and include demand through interroogatories and depositions and subpeona duces tecum for all financil documents and have the accounts forenically audited.

If you go "unarmed" against a party that has been secreting assest withe hope they will simply voluntarily tell the court about ALL of the finanical activity, you will be dissappointed and lose those assets. They wouldn't have been hiding them if they intended to be "honest".

People expect too much of judges. Like they are clarivoyant and take an active role on behalf of the parties rights; they no do not. That is what the lawyers are for. They advocate for their clients. This is an adversarial process. The courts can only act on the informtion provided.

No matter what happened in your sister/neighbor/ best friends case; every case is different. you cannot rely on one other person's experience to apply to your case. to think that way is naive

Yes you can. Based on your statement that "you did not sign the waiver". Whoever brokered the deal or processed the transaction needs to be informed that you did not sign the waiver as his spouse...that is forgery and you do have legal recourse for it. If you have an attorney assisting you with your divorce, all you need to do is show them this evidence.

I don't read where he forged anything, he asked her to sign and she didn't. Obviously, as I advised above, a forensic financial "post mortem" consisting of subpeonas dueces tecum, interrogatories, and depositions will be needed in this messy divorce.

SRD is correct... I read part of it wrong, "he mislead you in to believing he was just purchasing it"... I thought it saw somewhere that you never signed the waiver.